By Authority Of THE UNITED STATES OF AMERICA Legally Binding Document By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE : Criminal penalties may apply for noncompliance. Official Incorporator : THE EXECUTIVE DIRECTOR OFFICE OF THE FEDERAL REGISTER WASHINGTON, D.C. Document Name: CFR Section(s): Standards Body: e
Transcript
By Authority OfTHE UNITED STATES OF AMERICA
Legally Binding Document
By the Authority Vested By Part 5 of the United States Code § 552(a) and Part 1 of the Code of Regulations § 51 the attached document has been duly INCORPORATED BY REFERENCE and shall be considered legally binding upon all citizens and residents of the United States of America. HEED THIS NOTICE: Criminal penalties may apply for noncompliance.
Official Incorporator:THE EXECUTIVE DIRECTOROFFICE OF THE FEDERAL REGISTERWASHINGTON, D.C.
Document Name:
CFR Section(s):
Standards Body:
e
carl
Typewritten Text
ASME B16.9: Factory Made Wrought Steel Buttwelding Fittings
The next edition of this Standard is scheduled for publication in 2009. There will be no addenda issued to this edition.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. The interpretations will be included with this edition.
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This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the pUblic-at-large.
ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with any
items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise,
without the prior written permission of the publisher.
The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990
In 1921, the American Engineering Standards Committee, later the American Standards Association (ASA), organized Sectional Committee B16 to unify and further develop national standards for pipe flanges and fittings (and, later, for valves, gaskets, and valve actuators). Cosponsors of the B16 Committee were The American Society of Mechanical Engineers (ASME), the Heating and Piping Contractors National Association [now the Mechanical Contractors Association of America (MCAA)], and the Manufacturers Standardization Society of the Valve and Fittings Industry (MSS). Cosponsors were later designated as cosecretariat organizations.
Standardization of welding fittings was initiated in 1937 by a subgroup (designated Subgroup 6) of Subcommittee 3. After consideration of several drafts, a standard was approved by the Committee, cosponsors, and ASA, and published with the designation ASA BI6.9-1940.
Revisions were made in 1950 and 1955 to add sizes up to NPS 24 and to complete coverage of fittings in some sizes. These revisions were approved and published as ASA B16.9-1951 and ASA B16.9-1958. With the subgroup now designated Subcommittee 6 (later Subcommittee F), further revisions were begun to clarify the intent of the standard, to add angularity tolerances, and to include fittings of different types (long radius reducing elbows and crosses) and smaller sizes (NPS 1;4 and 1;2). This revision was published as ASA B16.9-1964 after ASA approval.
After reorganization of ASA, first as the United States of America Standards Institute (USASI), then as the American National Standards Institute (ANSI), with the Sectional Committee being redesignated as an American National Standards Committee, another revision increasing the size range to NPS 48 and revising the text for clarity was approved and published as ANSI B16.9-1971.
In 1975, Subcommittee F began a major revision to bring the standard up to date with current practice and usage. Common fractions were expressed as decimals (but without intending higher precision) and metric dimensional equivalents were added. Provisions for step-wise change of radius for NPS % long radius elbows and 180 deg returns were introduced. Following Standards Committee, cosecretariat, and ANSI approval, the revision was published as ANSI B16.9-1978. It was updated by a corrective addendum, B16.9a-1981, issued in February 1982.
In 1982, American National Standards Committee B16 was reorganized as an ASME Committee operating under procedures accredited by ANSI. In ASMEj ANSI B16.9-1986, the text was revised and inch dimensions were established as the standard.
In 1991, the Subcommittee reviewed the document and made a number of revisions that were included in ASME B16.9-1993. Dimensions for short pattern lap joints were also added.
In ASME B16.9-2001, short radius elbows and returns were added, which included all dimensions and tolerances of ASME B16.28-1994. Metric units were provided as an independent but parallel alternative standard to U.S. customary units and a Quality System Program appendix was added.
In 2003, the Subcommittee reviewed the document and made a number of revisions. The scope of the standard was changed to permit fabricated lap joint stub ends employing circumferential or intersection welds.
This Standard was approved as an American National Standard on October 15, 2003 and December 31, 2003.
No reproduction may be made of this material \vithout written consent of ASM.E. III .,
ASME 816 COMMllTEE Standardization of Valves, Flanges, Fittings, and Gaskets
(The following is the roster of the Committee at the time of approval of this Standard.)
OFFICERS
H. R. 50nderegger, Chair M. L. Nayyar, Vice Chair
P. A. Reddington, Secretary
COMMITTEE PERSONNEL
W. B. Bedesem, ExxonMobil Research & Engineering Co.
M. A. CLark, Nibco Inc.
A. Cohen, Arthur Cohen & Associates
C. E. Floren, Mueller Co.
O. R. Frikken, Consu ltant
A. Hamilton, ABS Americas
M. L. Henderson, Forgital USA
G. A. Jolly, Vogt Valves/Flowserve
M. Katcher, Haynes International
W. G. Knecht, Consultant
R. Koester, The William Powell Co.
R. O. Manning, U.s. Coast Guard W. N. Mclean, Newco Valves T. A. McMahon, Fisher Controls International Inc. M. L. Nayyar, Bechtel Power Corp. J. O. Page, U.s. Nuclear Regulatory Commission P. A. Reddington, The American Society of Mechanical Engineers R. A. Schmidt, Trinity-Ladish H. R. Sonderegger, Anvil International, Inc. W. M. Stephan, Flexitallic LP T. F. Stroud, Ductile Iron Pipe Research Association R. E. White, Richard E. White & Associates PC O. A. Williams, Southern Co. Services
SUBCOMMITTEE f - STEEL THREADED AND WELDED fiTTINGS
G. A. Jolly, Chair, Vogt Valves/Flowserve A. J. Roby, Secretary, The American Society of Mechanical
Engineers A. Appleton, Alloy Stainless Product Co. Inc.
G. A. Cuccio, Capital Manufacturing CO. J. P. Ellenberger, WFI International
v
O. R. Frikken, Consultant R. C. lafferty, Penna Machine Works Inc.
D. C. Monroe, Consultant R. A. Schmidt, Trinity-Ladish H. R. Sonderegger. Anvil International Inc. K. Umemura, Japan Fittings Association
General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings. Correspondence should be addressed to:
Secretary, BI6 Standards Committee The American Society of Mechanical Engineers Three Park Avenue New York, NY 10016-5990
Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard. Approved revisions will be published periodically.
The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation.
Interpretations. Upon request, the B16 Committee will render an interpretation of any requirement of the Standard. Interpretations can only be rendered in response to a written request sent to the Secretary of the BI6 Standards Committee.
The request for interpretation should be clear and unambiguous. It is further recommended that the inquirer submit his/her request in the following format:
Subject: Edition:
Question:
Cite the applicable paragraph number(s) and the topic of the inquiry. Cite the applicable edition of the Standard for which the interpretation is being requested. Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation. The inquirer may also include any plans or drawings which are necessary to explain the question; however, they should not contain proprietary names or information.
Requests that are not in this format will be rewritten in this format by the Committee prior to being answered, vvhich may inadvertently change the intent of the original request.
ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not "approve/' "certify/' "rate," or "endorse" any item, construction, proprietary device, or activity.
Attending Committee Meetings. The BI6 Standards Committee regularly holds meetings, which are open to the public. Persons wishing to attend any meeting should contact the Secretary of the B16 Standards Committee.
This Standard covers overall dimensions, tolerances, ratings, testing, and markings for wrought factory-made buttwelding fittings in sizes NPS 1;2 through 48 (DN 15 through 1200).
1.2 Special Fittings
Fittings may be made to special dimensions, sizes, shapes, and tolerances by agreement between the manufacturer and the purchaser.
1.3 Fabricated Fittings
Fabricated laterals and other fittings employing circumferential or intersection welds are considered pipe fabrication and are not within the scope of this Standard.
Fabricated lap joint stub ends are exempt from the above restrictions, provided they meet all the requirements of the applicable ASTM material specification listed in para. 5.
1.4 Standard Units
The values stated in either metric or U.s. customary units are to be regarded separately as standard. Within the text, the U.S. customary units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this Standard.
The designation for size is NPS for both metric and customary dimensioned fittings. Fitting pressure rating is associated with the connecting wall thickness of pipe of equivalent size and material.
1.5 References
1.5.1 Referenced Standards. Standards and specifications adopted by reference in this Standard are shown in Mandatory Appendix II. It is not considered practical to identify the specific edition of each standard and specification in the individual references. Instead, the specific edition reference is identified in Mandatory Appendix II. A product made in conformance with a prior edition of referenced standards and in all other respects conforming to this Standard will be considered to be in conformance.
1
1.5.2 Codes and Regulations. A fitting used under the jurisdiction of the AS ME Boiler and Pressure Vessel Code, the ASME Code for Pressure Piping, or a governmental regulation is subject to any limitation of that code or regulation. This includes any maximum temperature limitation, or rule governing the use of a material at low temperature.
1.6 Service Conditions
Criteria for selection of fitting types and materials suitable for particular fluid service are not within the scope of this Standard.
1.7 Welding
Installation welding requirements are outside the scope of this Standard.
1.8 Quality Systems
Nonmandatory requirements relating to the fitting manufacturer's Quality System Program are described in Nonmandatory Appendix A.
1.9 Convention
For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits (maximum or minimum values) are specified shall be rounded off as defined in ASTM E 29. This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-hand digit used in expressing the limit. Decimal values and tolerances do not imply a particular method of measurement.
1.10 Pressure Rating Designation
Class, followed by a dimensionless number, is the designation for pressure-temperature ratings. Standardized designations for flanges per ASME B16.5 referenced in this Standard are Classes 150, 300, 600, 900, 1500, and 2500.
2 PRESSURE RATINGS
2.1 Basis of Ratings
The allowable pressure ratings for fittings designed in accordance with this Standard may be calculated as for straight seamless pipe of equivalent material (as shown by comparison of composition and mechanical properties in the respective material specifications) in
accordance with the rules established in the applicable sections of ASME B31, Code for Pressure Piping. For the calculation, applicable data for the pipe size, wall thickness, and material that is equivalent to that of the fitting shall be used. Pipe size, wan thickness (or schedule number), and material identity on the fittings are in lieu of pressure rating markings.
2.2 Design of fittings
The design of fittings shall be established by mathematical analyses (e.g., ASME B16.49 for bends) contained in nationally recognized pressure vessel or piping codes, or at the manufacturer's option by proof testing in accordance with para. 9 of this Standard. In order to meet design or manufacturing requirements, it is expected that some portion of formed fittings may have to be thicker than the pipe wall with which the fitting is intended to be used. The mathematical analyses, if used, may take into account such thicker sections. Records of mathematical analysis and/ or successful proof test data shall be available at the manufacturer's facility for inspection by the purchaser.
3 SIZE
NPS, followed by a dimensionless number, is the designation for nominal fitting size. NPS is related to the reference nominal diameter, DN, used in international standards. The relationship is, typically, as follows:
DN NPS
15 ]~
20 ~ 25 1 32 114
40 IlL '2
50 2 65 z1~ 80 3
100 4
NOTE: For NPS > 4, the equivalence is DN = 25(NPS).
4 MARKING
4.1 Standard Marking
Each fitting shall be permanently marked to show the following:
(a) manufacturer's name or trademark (b) material identification, either the ASTM or ASME
grade designation (c) schedule number1 or nominal wall thickness in
mm
1 Schedule number is a dimensionless number that is widely used as a convenient designation for use in ordering pipe and fittings. It is normally associated with a group of standardized pipe wall thickness. Refer to ASME B36.10M and ASME B36.19M for complete details on pipe schedule numbers.
2
FACTORY-MADE WROUGHT BUTTWELDING FITTINGS
(d) size - the nominal pipe size (NPS) identification number related to the end connections shall be used
(e) compliance - see para 4.4 for standard and special fitting marking
A manufacturer may supplement these mandatory markings with others, including a DN size designation, but confusion with the required marking shall be avoided.
4.2 Exceptions
Where the size of the fitting does not permit complete marking, the identification marks may be omitted in reverse of the order presented above.
4.3 Depth of Stamping
Where steel stamps are used, care shall be taken so that the marking is not deep enough or sharp enough to cause cracks or to reduce the wall thickness of the fitting below the minimum allowed.
4.4 Compliance
4.4.1 Standard fittings. That the fitting was manufactured in conformance with this Standard, including all dimensional requirements, is certified by a prefix "WP" in the material grade designation marking.
4.4.2 Special Fittings. That the fitting was manufactured in conformance with this Standard, except that dimensional requirements are as agreed between the purchaser and the manufacturer, is certified by a supplementary suffix to the material grade designation marking as follows:
(a) "S9" applies for fittings in accordance with ASTM A 234, A 403, A 420, and A 815.
(b) "SPLD" applies for fittings in accordance with ASTM B 361, B 363, and B 366.
5 MATERIAL
Wrought fittings covered by this Standard shall be in accordance with ASTM A 234, A 403, A 420, A 815, B 361, B 363, B 366, or the corresponding standard listed in Section II of the ASME Boiler and Pressure Vessel Code. The term 'wrought denotes fittings made of pipe, tubing, plate, or forgings. Fittings made from block forgings may only be supplied subject to agreement between the manufacturer and purchaser. Such fittings need not meet the requirements of para. 7.
6 FITTING DIMENSIONS
6.1 General
This Standard provides for a fixed position for the welding ends with reference to either the centerline of the fi ttings or the overall dimensions. Dimensional requirements for these fittings are to be found in Tables
3 through 12 and Tables 12 through III of Mandatory Appendix I.
6.2 Special Dimensions
6.2.1 Fatigue loading. For applications where fatigue loading is a concern, required minimum dimensions shall be furnished by the purchaser.
6.2.2 Bore Diameter. Bore diameters a\vay from the ends are not specified. If special flow path requirements are needed, the bore dimensions shall be specified by the purchaser.
6.2.3 Stub Ends. Service conditions and joint construction often dictate stub end length requirements. Therefore, the purchaser must specify long or short pattern fitting when ordering. [See General Note (c) in Tables 10 and 19.]
7 SURFACE CONTOURS
Where adjacent openings in fittings are not in parallel planes, they shall be joined by a circular arc or radius on the external surfaces. The arc or radius may be tenninated in tangents. Except as provided for block forgings (see para. 5), the projected profile of external surfaces of fittings shall not have sharp intersections (corners) and / or collapsed arcs.
8 END PREPARATION
Unless otherwise specified, the details of the welding end preparation shall be in accordance with Table 1. Transitions from the welding bevel to the outside surface of the fitting and from the root face to the inside surface of the fitting lying within the maximum envelope shown in Fig. 1 are at the manufacturer's option, except as covered in Note (5) of Fig. 1 or unless otherwise specifically ordered.
9 DESIGN PROOF TEST
9.1 Required Tests
Proof tests shall be made as set forth in this Standard when the manufacturer chooses proof testing to qualify the fitting design. Unless otherwise agreed upon between the manufacturer and purchaser, the proof test shall be one based on the computed bursting pressure of the fitting and its connecting piping.
Lap jOint stub ends are exempt from proof testing because they are used in a flange assembly, which will have different ratings depending on service application.
9.2 Test Assembly
9.2.1 Representative Components. Fittings that are representative of production and selected for test shall be identified as to material, grade, and lot, including
3
ASME B16.9-2003
heat treatment. They shall be inspected for dimensional compliance to this Standard.
9.2.2 Other Components. Straight seamless or welded pipe sections whose calculated bursting strength is at least as great as the proof test pressure as calculated in para. 9.3 shall be welded to each end of the fitting to be tested. Any internal misalignment greater than 1.5 mm (0.06 in.) shall be reduced by taper boring at a slope not over 1:3. Length of pipe sections for closures shall be as follows:
(a) Minimum length of pipe shall be one pipe O.D. for NPS 14 (ON 350) and smaller.
(b) I'vlinimum length of pipe shall be one-half pipe O.D. for NPS greater than 14 (ON 350).
9.3 Test Procedure
Test fluid shall be water or other liquid used for hydrostatic testing. Hydrostatic pressure shall be applied to the assembly. The test is successful if the assembly withstands, ,vithout rupture, 105% of the computed proof test pressure defined below.
where D P
5
t =
p = 2St D
specified outside diameter of pipe computed minimum proof test pressure for fitting actual tensile strength of the test fitting, determined on a specimen representative of the test fitting, which shall meet the tensile strength requirements of the applicable material of para. 5 nominal pipe wall thickness of the pipe that the fitting marking identifies
NOTE: Any dimensionally consistent system of units may be used.
9.4 Applicability of Test Results
It is not necessary to conduct an individual test of fittings with all combinations of sizes, wall thicknesses, and materials. A successful proof test on one representative fitting may represent others to the extent described in paras. 9.4.1, 9.4.2, and 9.4.3.
9.4.1 Size Range. One test fitting may be used to qualify similarly proportioned fittings with a size range from one-half to twice that for the tested fitting. The test of a nonreducing fitting qualifies reducing fittings of the same pattern. The test of a reducing fitting qualifies reductions to smaller sizes.
9.4.2 Thickness Range. One test fitting may be used to qualify similarly proportioned fittings with t/ D ranges from one-half to three times that for the tested fitting.
9.4.3 MateriaL Grades. The pressure retaining capacity of a geometrically identical fitting made of various
Less than x [Note (2)] x to 22 (0.88), inclusive More than 22 (0.88)
GENERAL NOTES:
(a) Dimensions in parentheses are in inches. (b) Other dimensions are in millimeters.
NOTES:
(1) See para. 8 and Fig. 1 for transition contours.
End Preparation
Cut square or slightly chamfer, at manufacturer's option (not illustrated) Plain bevel as in sketch (a) above Compound bevel as in sketch (b) above
(2) x = 5 (0.19) for carbo n steel or ferritic alloy steel and 3 (0.12) for austen itie alloy steet.
grades of steel will be directly proportional to the tensile properties of the various grades; see para 2.1. Therefore, it is necessary to test only a single material grade in a representative fitting to prove the design of the fitting.
10 PRODUCTION TESTS
Hydrostatic testing of wrought fittings is not required by this Standard. All fittings shall be capable of withstanding, without leakage or impairment of serviceability, a hydrostatic test pressure required by the applicable piping code for seamless pipe of material equivalent to
4
the fitting material, and of the size and wall thickness the fitting marking identifies.
11 TOLERANCES
Tolerances for fittings are shown in Tables 2 and 11, and apply to the nominal dimensions given in Tables 3 through 12 and Tables 12 through Ill. Where given in the tables, the minimum and maximum dimensions are based on these tolerances. The listings with decimals do not imply precision measurement, such as use of vernier, micrometer, electronic readout equipment, etc.
No reproduction may be made of this material without written consent of ASME. m ~
FACTORY-MADE WROUGHT BUTTWELDING FITTINGS
Outside
Note (5)
Outside
45 deg max.
0.5tmin 1~--~~t!---1.5tmin
Radius ~ 0.05tmin
Radius optional
\ \
Component of Fitting
ASME B16.9-2003
Note (3)
............ -('Note (4)
............ } ...... \ 1 \ \
r---l--l--I tnom tmin Max. [Note (2)]
I M Min.-1.0tmin
NOTES:
\ \
30 deg max.\ ././././r" - - -
./ ./
'--Max.
Inside 1""- slope 1:3
Note (5): Radius ~ 0.05tmin _____ 1
Inside I f.-- 2tmin transition region
r.!~ _~, \= =:::::= = __ l Note(1}
(1) The value of tmin is whichever of the following is applicable: (a) the minimum ordered wall thickness of the pipe, to include pipe that is purchased to a nominal wall thickness
with an undertolerance other than 12.5%; (b) 0.875 times the nominal wall thickness of pipe ordered to a pipe schedule wall thickness that has an undertoler
ance of 12.5%. (2) The maximum thickness at the end of the component is:
(a) the greater of [tmin + 4 mm (0.16 in.)] or 1.15tmin when ordered on a minimum wall basis; (b) the greater of [tmin + 4 mm (0.16 in.)] or 1.10tmin when ordered on a nominal wall basis.
(3) Weld bevel shown is for illustration only. (4) The weld reinforcement permitted by applicable code may lie outside the maximum envelope. (5) Where transitions using maximum slope do not intersect the inside or outside surfaces within the transition region, as
shown by phantom outline, maximum slopes shall be used. Alternatively, radii lying within the envelope may be used.
Fig. 1 Maximum Envelope for Welding End Transitions
5 to 8 10 to 12 14 to 16 18 to 24 26 to 30 32 to 42 44 to 48
(1) The inside diameter and the nominal wall thicknesses at ends are to be specified by the purchaser.
Overall Length
of Caps,
E
3 3 3 6 6 6
10 10
(2) A minimum wall thickness of 87.5% applies unless the purchaser specifies a different wall thickness tolerance. See Fig. 1, Note (l)(a).
(3) Out-of-round is the sum of absolute values of plus and minus tolerances.
(4) This tolerance may not apply in localized areas of formed fittings where increased wall thickness is required to meet design requirements of para. 2.2.
(5) Unless otherwise specified by the purchaser, these tolerances apply to the nominal inside diameter, which equals the difference between the nominal outside diameter and twice the nominal wall thickness.
(6) See Table 10 for limiting dimensions of outside diameter of barrel.
Table 9 Dimensions of Reducing Outlet Tees and Reducing Outlet Crosses
Outside Center-to-End Outside Center-to-End
Nominal Diameter at Outlet, Nominal Diameter at Outlet, Pipe Size Bevel Run, M Pipe Size Bevel Run, M
(NPS) Run Outlet C [Note (1)] (NPS) Run Outlet C [Note (1)]
lh x lh x % 21.3 17.3 25 25 4 x 4 x 31h 114.3 101.6 105 102 "h x lh x \0, 21.3 13.7 25 25 4 x 4 x 3 114.3 88.9 105 98 % x % x 1h 26.7 21.3 29 29 4 x 4 x 21h 114.3 73.0 105 95 %x%x% 26.7 17.3 29 29 4 x 4 x 2 114.3 60.3 105 89 1 x 1 x % 33.4 26.7 38 38 4 x 4 x l1h 114.3 48.3 105 86 lX1X 1h 33.4 21.3 38 38
5 x 5 x 4 141.3 114.3 124 117
l11t, x 1% x 1 42.2 33.4 48 48 5 x 5 x 3% 141.3 101.6 124 114
l1It,xl%X% 42.2 26.7 48 48 5 x 5 x 3 141.3 88.9 124 111
l11t, x 1% x 1h 42.2 21.3 48 48 5 x 5 x 21h 141.3 73.0 124 108 5 x 5 x 2 141.3 60.3 124 105
l1h x 1 % X lllt, 48.3 42.2 57 57 6 x 6 x 5 168.3 141.3 143 137 l1h x 11h x 1 48.3 33.4 57 57 6 x 6 x 4 168.3 114.3 143 130 l 1hx11h x % 48.3 26.7 57 57 6 x 6 x 31h 168.3 101.6 143 127 l'h x 11h x lh 48.3 21.3 57 57 6 x 6 x 3 168.3 88.9 143 124
6 x 6 x 21/2 168.3 73.0 143 121 2x2x1 1h 60.3 48.3 64 60 2 x 2 x 1% 60.3 42.2 64 57 8 x 8 x 6 219.1 168.3 178 168 2 x 2 X 1 60.3 33.4 64 51 8 x 8 x 5 219.1 141.3 178 162 2 x 2 x % 60.3 26.7 64 44 8 x 8 x 4 219.1 114.3 178 156
8 x 8 x 31h 219.1 101.6 178 152
2% x 21/2 x 2 73.0 60.3 76 70 21hx 21hx 11/2 73.0 48.3 76 67 10 x 10 x 8 273.0 219.1 216 203
21hx21hx1% 73.0 42.2 76 64 10 x 10 x 6 273.0 168.3 216 194
2"h x 21h x 1 73.0 33.4 76 57 10 x 10 x 5 273.0 141.3 216 191 10 x 10 x 4 273.0 114.3 216 184
3 x 3 x 21h 88.9 73.0 86 83 12 x 12 x 10 323.8 273.0 254 241 3 x 3 x 2 88.9 60.3 86 76 12 x 12 x 8 323.8 219.1 254 229 3 x 3 x 11h 88.9 48.3 86 73 12 x 12 x 6 323.8 168.3 254 219 3x3xl% 88.9 42.2 86 70 12 x 12 x 5 323.8 141.3 254 216
3% x 31h x 3 101.6 88.9 95 92 14 x 14 x 12 355.6 323.8 279 270 31h x 31
/ 2 x 21h 101.6 73.0 95 89 14 x 14 x 10 355.6 273.0 279 257 31h x 31/ 2 x 2 101.6 60.3 95 83 14 x 14 x 8 355.6 219.1 279 248 31h x 31h x 11h 101.6 48.3 95 79 14 x 14 x 6 355.6 168.3 279 238
Length. F Length. F [Notes (3), (4)] [Notes (3), (4)]
76 51 76 51
102 51 102 51 102 51
152 64 152 64 152 64 152 76 152 76
203 76 203 89 203 102 254 127 254 152
305 152 305 152 305 152 305 152 305 152
305 152
Radius of
Fillet, R [Note (5)]
3 3 3 5 6
8 8
10 10 11
11 13 13 13 13
13 13 13 13 13 13
(c) Service conditions and joint construction often dictate stub end length requirements. Therefore, the purchaser must specify long or short pattern fitting when ordering.
NOTES:
(1) Gasket face finish shall be in accordance with A5ME B16.5 for raised face flanges.
(2) The lap thickness T shall not be less than nominal pipe wall thickness. See Table 2 for maximum tolerance.
(3) When short pattern stub ends are used with larger flanges in Classes 300 and 600, and with most sizes in Classes 900 and higher, and when long pattern stub ends are used with larger flanges in Classes 1500 and 2500, it may be necessary to increase the length of the stub ends in order to avoid covering the weld with the flange. Such increases in length shall be a matter of agreement between the manufacturer and purchaser.
(4) When special facings such as tongue and groove, male and female, etc., are employed, additional lap thickness must be provided and such additional thickness shall be in addition to (not included in) the basic length F.
(5) These dimensions conform to the radius established for lap joint flanges in ASME B16.5.
(6) This dimension conforms to standard machined facings shown in ASME B16.5. The back face of the lap shall be
machined to conform to the surface on which it seats. Where ring joint facings are to be applied. use dimension K as given in ASME B16.5.
(b) The shape of these caps shall be ellipsoidal and shall conform to the requirements given in the ASME Baiter and Pressure Vessel Code.
NOTES:
(1) Length E applies forthickness not exceedi ng that given in colum n "Lim iting Wall Th ickness for Length, E." (2) Length £1 applies for thickness greater than that given in column "Limiting Wall Thickness" for NPS
24 and smaller. For NPS 26 and larger, length E1 shall be by agreement between the manufacturer and purchaser.
All Fittings [Notes (1) and (2)] Center- Overall ~ to-End Length of 180 deg Returns 0
;;0
Lap Joint Stub Ends -< Outside Dimensions Reducers Center- » Diameter Inside of 90 deg and Lap Overall to- Back- Align- [Note (6») Angularity ""'0
""'0 Tolerances ...,
Nominal at Bevel, Diameter and 45 deg Joint Length Center to-Face ment Outside Fillet Lap Nominal z 0
Pipe D at End Elbows and Stub of Dimen- Dimen- of Diameter Radius Thick- Pipe Off Off x Z Size [Notes (3) [Notes (3) Tees, Ends, Caps, sion, sion, Ends, of Lap, of Lap, ness, Size Angle, Plane, 0
(NPS) and (4)] and (5)] A, 8, C, M F,H E 0 K U G R T (NPS) Q p ~ ()
~ @I 3 to 31;2 0.06 0.06 0.06 0.06 0.12 0.25 0.25 0.03 +0, +0, +0.06, I 5 to 8 0.06 0.12
~~ -0.03 -0.03 -0 0"0 CD .j:..
8 0" I 4 0.06 0.06 0.06 0.06 0.12 0.25 0.25 0.03 +0, +0, +0.06, I 10 to 12 0.09 0.19 ~'<
-0.03 -0.06 -0 0..9-CD CD
g? 5 to 8 +0.09, 0.06 0.06 0.06 0.25 0.25 0.25 0.03 +0, +0, +0.06, I 14 to 16 0.09 0.25 ~ g I
rJ) :::1. -0.06 -0.03 -0.06 -0 8 (") ;? § CD ifl :::1. 0 10 to 18 +0.16, 0.12 0.09 0.09 0.25 0.38 0.25 0.06 +0, +0, +0.12, I 18 to 24 0.12 0.38 e:. o. tv -0.12 -0.06 -0.06 -0 ~.~
,.....
:;'0 20 to 24 +0.25, 0.19 0.09 0.09 0.25 0.38 0.25 0.06 +0, +0, +0.12, I 26 to 30 0.19 0.38 o ......,
a~ -0.19 -0.06 -0.06 -0 §. g. ~ ~'I 26 to 30 +0.25, 0.19 0.12 0.19 0.38 I 32 to 42 0.19 0.50
8 e:. -0.19 ::: tTl ~Jg
32 to 48 +0.25, 0.19 0.19 0.19 0.38 I 44 to 48 0.19 0.75 a S'I o CD -0.19 ~~ ;J>:-" V1
GENERAL NOTES: ~ (a) For reference, see Table 11 Illustration on page 20.
e (b) All dimensions are in inches.
$tI' (c) Tolerances are equal plus and minus except as noted.
NOTES: (1) The inside diameter and the nominal wall thicknesses at ends are to be specified by the purchaser. (2) A minimum wall thickness of 87.5% applies unless the purchaser specifies a different wall thickness tolerance. See Fig.
1, Note (1) (a). > I.n
(3) Out-of-round is the sum of absolute values of plus and minus tolerances. :s: ..., (4) This tolerance may not apply in localized areas of formed fittings where increased wall thickness is required to meet OJ
design requirements of para. 2.2. ~
'" (5) Unless otherwise specified by the purchaser, these tolerances apply to the nominal inside diameter, which equals the
\0 N
difference between the nominal outside diameter and twice the nominal wall thickness. 0 0
(6) See Table 19 for limiting dimensions of outside diameter of barrel. w
(c) Service conditions and joint construction often dictate stub end length requirements. Therefore, the purchaser must specify long or short pattern fitting when ordering.
NOTES: (1) Gasket face finish shall be in accordance with ASME 816.5 for raised face flanges. (2) The lap thickness T shall not be less than nominal pipe wall thickness. See Table 11 for tolerance. (3) When short pattern stub ends are used with larger flanges in Classes 300 and 600, and with most sizes in Classes 900
and higher, and when long pattern stub ends are used with larger flanges in Classes 1500 and 2500, it may be necessary to increase the length of the stub ends in order to avoid covering the weld with the flange. Such increases in length shall be a matter of agreement between the manufacturer and purchaser.
(4) When special facings such as tongue and groove, male and female, etc., are employed, additional lap thickness must be provided and such additional thickness shall be in addition to (not included in) the basic length F.
(5) These dimensions conform to the radius established for lap joint flanges in ASME B16.5. (6) This dimension conforms to standard machined facings shown in ASME 816.5. The back face of the lap shall be
machined to conform to the surface on which it seats. Where ring joint facings are to be applied, use dimension K as given in ASME 816.5.
(b) The shape of these caps shall be ellipsoidal and shall conform to the shape requirements as given
in the ASME Boiler and Pressure Vessel Code.
NOTES:
(1) Length E applies forthickness not exceeding that given in column "Limiting Wall Thickness for Length, E." (2) Length E1 applies for thickness greater than that given in column "Limiting Wall Thickness" for NPS
24 and smaller. For NPS 26 and larger, length E1 shall be by agreement between the manufacturer
Publisher: The American Society of Mechanical Engineers (ASME International), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300
ASTM A 234-02, Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
ASTM A 403-02, Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASTM A 420-02, Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
33
ASTM A 815/ A 815M-Ola, Standard Specification for Wrought Ferritic, Ferritic/ Austenitic and Martensitic Stainless Steel Piping Fittings
ASTM B 361-02, Standard Specification for FactoryMade Wrought Aluminum and Aluminum-Alloy Welding Fittings
ASTM B 363-02, Standard Specification for Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings
ASTM B 366-Ole1, Standard Specification for FactoryMade Wrought Nickel and Nickel Alloy Fittings
ASTM E 29-02, Standard Practice for Using Significant Digits in Test Data to Determine Conformance With Specifica tions
Publisher: American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959
ISO 6708:1995, Pipework Components - Definition and Selection of DN (Nominal Size)
ISO 9000:2000, Quality Management Systems - Fundamentals and Vocabulary
ISO 9001:2000, Quality Management Systems -Requirements
ISO 9004:2000, Quality Management Systems - Guidelines for Performance Improvements
Publisher: International Organization for Standardization (ISO), 1 rue de Varembe, Case Postale 56, CH-1211, Geneve 20, Switzerland/Suisse
The products manufactured in accordance with this Standard shall be produced under a Quality System Program following the principles of an appropriate standard from the ISO 9000 series.1 A determination of the need for registration and/ or certification of the product
1 The series is also available from the American National Standards Institute (ANSI) and the American Society for Quality (ASQ) as American National Standards that are identified by a prefix "Q" replacing the prefix "ISO." Each standard of the series is listed in Mandatory Appendix II.
34
manufacturer's quality system by an independent organization shall be the responsibility of the manufacturer. The detailed documentation demonstrating program compliance shall be available to the purchaser at the manufacturer's facility. A written summary description of the program utilized by the product manufacturer shall be available to the purchaser upon request. The product manufacturer is defined as the entity whose name or trademark appears on the product in accordance with the marking or identification requirements of this Standard.
Replies to Technical Inquiries January 2002 through October 2002
FOREWORD
This publication includes all of the written replies issued between the indicated dates by the Secretary, speaking for the ASME BI6 Committee, Standardization of Valves, Flanges, Fittings, and Gaskets, to inquiries concerning interpretations of technical aspects of AS ME B16.9, FactoryMade Wrought Buttwelding Fittings.
These replies are taken verbatim from the original letters except for a few typographical corrections and some minor editorial corrections made for the purpose of improved clarity. In some few instances, a review of the interpretation revealed a need for corrections of a technical nature; in these cases, a corrected interpretation follows immediately after the original reply.
These interpretations were prepared in accordance with the accredited ASME procedures. ASME procedures provide for reconsideration of these interpretations when or if additional information is available that the inquirer believes might affect the interpretation. Further, persons aggrieved by this interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not "approve," "certify," "rate/' or "endorse" any item, construction, proprietary device, or activity.
Question (1): Does ASME B16.9-2001 permit the successful proof test data of a B16.9-2001 NPS 8-Schedule 20, 90 deg elbow (tID = 0.29) to be extended to cover the proof test requirement for a B16.9-2001 NPS 20-Standard Schedule, 90 deg elbow (tiD = 0.018) under para. 9.4.2?
Reply (1): No. Paragraph 9.4.1 applies as well.
Question (2): Does ASME B16.9-2001 permit the successful proof pressure test data of a B16.9 fitting such as a tee to be applied to qualify a fitting such as an elbow, cap, or reducer?
Reply (2): No. See para. 9.4. Extension of test data shall be from a representative fitting.
Interpretation: 03-2
Subject: ASME B16.9-2001, Paras. 2.2 and 9
Date Issued: October 10, 2002
File: B16-02-006
Question: Does ASME B16.9-2001 have specific requirements for increasing the wall thickness above the minimum for fittings or particular areas on fittings to meet the pressure rating requirements?
Dryseal Pipe Threads (Inch) .......................................................................... B1.20.3-1976 (R1998) Cast Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 ................................................ B16.1-1998
Malleable Iron Threaded Fittings: Classes 150 and 300 ............................................................. B16.3-1998
Gray Iron Threaded Fittings: Classes 125 and 250 ................................................................. B16.4-1998
Pipe Flanges and Flanged Fittings NPS lh Through NPS 24 Metric/Inch Standard ........................................ B16.5-2003 Factory-Made Wrought Buttwelding Fittings ....................................................................... B16.9-2003
Face-to-Face and End-to-End Dimensions of Valves ............................................................... B16.10-2000 Forged Fittings, Socket-Welding and Threaded ................................................................... B16.11-2001
Cast Iron Threaded Drainage Fittings ........................................................................... 816.12-1998 Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads ..................................................... B16.14-1991 Cast Bronze Threaded Fittings: Classes 125 and 250 ....................................................... B16.15-1985 (R1994) Cast Copper Alloy Solder joint Pressure Fittings .................................................................. B16.18-2001 Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed ............................................. 816.20-1998 Nonmetallic Flat Gaskets for Pipe Flanges ....................................................................... B16.21-1992
Cast Copper Alloy Fittings for Flared Copper Tubes ................................................................ 816.26-1988 Wrought Steel 8uttwelding Short Radius Elbows and Returns ....................................................... B16.28-1994
Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings - DWV .............. , ........................ 816.29-2001 Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up to 125 psig (Sizes % Through 2) ................. B16.33-1990
Valves - Flanged, Threaded, and Welding End ................................................................... B16.34-1996
Large Metallic Valves for Gas Distribution (Manually Operated, NPS 21h to 12, 125 psig Maximum) ................ 816.38-1985 (R1994) Malleable Iron Threaded Pipe Unions .......................................................................... 816.39-1998
Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems ................................. B16.40-2002
Functional Qualification Requirements for Power Operated Active Valve Assemblies for Nuclear Power Plants ......... 816.41-1983 (R1989)
Ductile Iron Pipe Flanges and Flanged Fittings, Classes 150 and 300 ................................................ B16.42-1998
Manually Operated Metallic Gas Valves for Use in Above Ground Piping Systems Up To 5 psi ............................ 816.44-2002
Cast Iron Fittings for Sovent® Drainage Systems .. " .............................................................. 816.45-1998 Large Diameter Steel Flanges (NPS 26 Through NPS 60) ........................................................... B16.47-1996
Steel Li ne Blan ks ........................................................................................... B16.48-1997 Factory-Made Wrought Steel Buttwelding Induction Bends for Transportation and Distribution Systems ..................... 816.49-2000
Wrought Copper and Copper Alloy Braze-joint Pressure Fittings ..................................................... B16.50-2001 Power Piping ............................................................................................... B31.1-2001
Fuel Gas Piping (not an ANSI standard) .......................................................................... B31.2-1968 Process Piping .............................................................................................. 831.3-2002
Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids .. , ......................................... B31.4-2002
Refrigeration Piping and Heat Transfer Components ................................................................ B31.5-2001
Gas Transmission and Distribution Piping Systems ................................................................ 831.8-1999
Building Services Piping ...................................................................................... B31.9-1996
Slurry Transportation Piping Systems ........................................................................... 831.11-2002
Manual for Determining the Remaining Strength of Corroded Pipelines ................................................ B31G-1991 Welded and Seamless Wrought Steel Pipe ................................. " ................................. B36.10M-2000
Self-Operated and Power-Operated Safety-Related Valves Functional Specification Standard ....................... N278.1-1975 (R1992)
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