Kam Kiu Aluminum Group

Drawn Tube Drawn Tube

& &

Seamless Tube Seamless Tube

InformationInformation

What is Drawn Tube ?

An extruded tube brought to final dimension by cold drawing through a die and over a mandrel. This process reduces the cross sectional area of the tube, increases strength and refines the tube surface.

Tube Drawing Diagram

Tube Draw Die And Mandrel

Mandrel

Die

Die

BenchRod Drawn Tube

Mandrel

Draw DieDie Bearing

Die Assembly Front View

Drawn Tube

Tube Drawing Process

Drawn Tube Products - Bow Rails

Drawn Tube Products - Swaged Tube

Drawn Tube Products - Expanded Tube

Drawn Tube Products - Flared Tube

Drawn Tube Products - Ping Golf

Drawn Tube Products - Anodizing Colors

Swimming Pool BlueSwimming Pool Blue

GoldGold

BlackBlack

Drawn Tube End Use Products

Water Wand Golf Ball Retriever

Nifty Nabber

Shovel

Extension Pole

Drawn Tube End Users

Drawn Tube Advantages Vs Extruded Tube

Drawn Tube Advantages Vs Extruded Tube

• Dimensional Tolerances - Because the tube is drawn over a mandrel and through a die, consistent dimensions can be achieved.

• Superior Strength - Coldwork increases tube strength and is stronger that an equivalent extruded tube.

• Attractive Appearance - The drawing process enhances tube cosmetics by producing a bright finish with no weld lines.

• Machining - The drawn tube’s superior strength and hardness characteristics enhance tube machinability. This assures a better machined surface with less gumming.

• Bending - Better dimensional and temper characteristics greatly enhance tube bending operations. Consistent dimensions and temper reduce bender setup time and require less machine adjustments. Tube spring back is enhanced. Precise bends can be obtained.

• Anodizing - The draw process refines the surface of the tube eliminating extrusion die lines and other surface irregularities. This provides a superior finish for bright dip and etch and clear anodizing.

Porthole VS Seamless - Market Look

Porthole drawn tube is suitable for many tube applications - flagpoles, antennas, conveyor rolls, textile spools, orthopedic applications, recreational, marine applications.

Seamless tube is better suited for high stress applications such as hydraulic cylinder tube used in trench shoring devices, photocopiers, bicycle, kicking scooters, etc.

Drawn Tube Shapes

Upon special inquiry, we offer drawn shapes including squares,triangles, and flutes. Square and triangular shapes are not supported by the tube straightening process, therefore straightness is not guaranteed.

Drawn Tube Shapes

TriFlat

Drawn Tube Shapes

Square

Drawn Tube Shapes

Fluted Tube

Tube Fabrication

Hydraulic End FormingHydraulic End FormingCut To LengthCut To LengthDeburringDeburringFlaringFlaringPunchingPunchingChamferingChamferingThreadingThreadingBendingBending

A broad range of value added services are available.

Finishing

A broad range of finishes are available.

Bright Dip ClearBright Dip ClearBright Dip GoldBright Dip GoldBlack Dip BlackBlack Dip BlackEtch & ClearEtch & ClearEtch & GoldEtch & GoldEtch & BlackEtch & BlackSwimming Pool BlueSwimming Pool Blue2 Step Organic Black2 Step Organic Black

Certifications

Drawn Tube is certifiable to the Drawn Tube is certifiable to the following specifications:following specifications:

ASTM-B483 - Porthole General Purpose Drawn Tube

ASTM -B210 - Seamless Drawn Tube

Drawn Tube Tolerancing

Drawn Tube Tolerancing

Metallurgical Considerations

Bending Alloys/Tempers

6063 - T8326063 - T83

3003 - H14 3003 - H12

3003 - H16 3003 - H18

Flattening Alloys/Tempers

6063 - T831

Machining Alloys/Tempers

6061 - T8 Seamless6063 - T832

3003 - H14 3003 - H12

3003 - H16 3003 - H18

Anodizing Alloys/Tempers

6063 - T8326063 - T83

3003 - H14 3003 - H12

3003 - H16 3003 - H18

3003 - 0 6063 - 0 3003 - 0

6063 - 0

Metallurgical ConsiderationsThe following table highlights common tube sizes in 6063-T832 that are produced and their minimum bend radius based on a fully tooled radial draw bender. Other considerations may be need on other types of benders.

Tube Bending ConsiderationsTube Size Minimum Radius

.750 X .035 2.000”

.750 X .042 1.750”

.750 X .049 1.562”

.750 X .065 1.312”

.875 X .035 2.562”

.875 X .042 2.250”

.875 X .049 2.000”

.875 X .065 2.687”1.000 X .035 3.250”1.000 X .042 2.812”1.000 X .049 2.500”1.000 X .065 2.125”

Physical PropertiesTensile Strength - ksi Elongation % min.

Ultimate YieldAlloyAnd Temper

SpecifiedWall

Thickness .in Min Max Min MaxFull- Section

SpecimenCut-Out

Specimen1100-0 .014 - .500 11.0 15.5 3.5 .. .. ..1100-H14 .014 - .500 14.0 .. 11.0 .. .. ..1100-H16 .014 - .500 19.0 .. 17.0 .. .. ..1100-H18 .014 - .500 22.0 .. 20.0 .. .. ..

.025 - .049 14.0 19.0 5.0 .. 30 20

.050 - .259 14.0 19.0 5.0 .. 30 203003 – 0

.260 - .500 14.0 19.0 5.0 .. .. 303003-H12 .010 - .500 17.0 .. 12.0 .. .. ..

.025 - .049 20.0 .. 17.0 .. 5 3

.050 - .259 20.0 .. 17.0 .. 8 43003-H14

.260 - .500 20.0 .. 17.0 .. .. ..

.025 - .049 24.0 .. 21.0 .. 3 2.050 - .259 24..0 .. 21.0 .. 5 43003-H16.260 - .500 24.0 .. 21.0 .. .. ...025 - .049 27.0 .. 24.0 .. 3 5.050 - .259 27.0 .. 24.0 .. 5 33003-H18.260 - .500 27.0 .. 24.0 .. .. ..

6063-0 .018 - .500 .. 19.0 .. .. .. ..6063-T83 .025 - .259 .. 33.0 30.0 56063-T832 .025 - .049 41.0 .. 36.0 .. 8 5

.050 - .259 40.0 .. 35.0 .. 8 5

6061-0 .018 - .500 .. 22.0 .. 14.0 15 156061-T8 .050 - .259 42.0 35.0 N/A N/A

6161-T8 For Straight Length Usage Only – Not For Bending