DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
DP-Master Drill Pipe
Design
DP-Master manufactures the complete range of API drill pipe products from 2-3/8’’ OD up to 6-5/8’’ OD. In addition to standard API 5DP specifications, DP-Master also manufactures drill pipe in accordance with NS-1 and TH HILL Critical specifications as well as to many customer specifications. For Sour Service applications, DP-Master manufactures SS-95 & SS-105 in accordance with IRP 1.8 requirements.
DP-Master manufactures the complete range of API drill pipe products from 2-3/8’’ OD up to 6-5/8’’ OD. In addition to standard API 5DP specifications, DP-Master also manufactures drill pipe in accordance with NS-1 and TH HILL Critical specifications as well as to many customer specifications. For Sour Service applications, DP-Master manufactures SS-95 & SS-105 in accordance with IRP 1.8 requirements.
Internal Upset miu
Long & Smooth Transition from Upset to Tube Body
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
Quality and Manufacturing
All drill pipe and tool joints are manufactured in our modern and technologically advanced manufacturing
facility at DP-Master. Each tool joint is forged, machined, processed, inspected and tested by qualified
operators to ensure the quality meets or exceed API specifications and customer’s requirements.
The Pipe Body and Tool Joint are joined together
by friction welding. Each heat affected zone is
quenched and tempered using our post weld heat
treatment system to ensure a strong, tough and
uniform weld zone.
100% of all friction welds are inspected by UT &
MPI and hardness readings are taken across the
heat affected zone. The friction weld area both
internal and external are ground and sanded to a
smooth finish to ensure these critical areas are
free of stress risers.
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
DP-Master Drill Pipe Manufacturing Flow
Drill Pipe Body Tool Joint
Green Tube
Laboratory Inspection
Induction Heating
Upsetting Pipe Ends
Austenitizing Pipe
Quenching Pipe
Tempering Pipe
Inspection Point
Straightening Pipe
Special End Area Inspection (SEA), UT Shear Inspection & UT Wall Inspection
Billet Saw Cut
Forging Into Tool Joint Blank
Inspection Point
Blanking & Boring
Inspection Point
Austenitizing
Quenching
Tempering
Inspection Point
Threading & Finishing
Phosphate Coating
Inspection Point Inspection Point
Assembly
TRUSCOPE Inspection System Full Length Pipe Inspection
Turning & Boring
Drill Pipe Body Ready for Welding
Tool Joint Ready for Welding
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
Assembly
Ready For Welding
Pipe Body & Tool Joint Assembled By Inertia Friction Welding
Stress Relieve Welded Zone
Tool Joint Alignment
Austenitizing, Quenching & Tmpering Weld Zone
Weld Zone & Final Inspection Wet MPI, UT, Dimensional, Visual & Drift Test
Hardbanding
Internal Coating
Completed Drill Pipe
Ready for Shipping
Drill pipe is manufactured to applicable
industry specifications and to customer
requirements. Each drill pipe is inspected 100%
at completion.
Hardness Inspection Weld Zone
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
Quality control is paramount at DP Master, which is why we have a strategic partnership with Tuboscope
allowing us to have the TRUSCOPE Inspection System onsite. Our drill pipe undergo Special End Area
inspection (SEA) following the TRUSCOPE inspection and all new drill pipe come with a Tuboscope
Inspection Certificate, meaning they are ready for service even in the most extreme conditions. The
Tuboscope certificate details clearly the specification to which the pipe was inspected and this is a true Third
Party Guarantee that adds significant value to DP-Master's products.
.
Features and Options
In addition to the standard manufacturing processes where customer required, DP-Master is able to perform
hardbanding, internal coating, thread cold roll and make & break to the highest quality standard.
High Performance Rotary Shoulder Connection
DP-Master offers its DPM-DS and DPM-MT series double shoulder connections which outperform conventional API connections to meet the needs of deep, extended and challenging wells with greater torsional capacities.
Tool Joint Make & Break
Factory make & break performed in controlled procedure ensure product consistency. This help to save valuable rig time and cost while reducing risk of mishandling incident and rig downtime.
Surface Protection
Phosphate coating are applied to all threads and seal shoulders of connections to improve anti galling and corrosion.
DP-Master can supply internal plastic coating according to customer requirements. The coating forms a protective layer in the pipe ID to prevent corrosion and thus extend the life span of the pipe in the drilling environment.
Enhanced Fatigue Resistance
Cold rolling of thread roots has demonstrated the beneficial effects to improve fatigue resistance of the connections by minimizing crack initiation.
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
Mechanical Properties
DP-Master has selected specially engineered metallurgy for its tool joints and tubes. Tool Joints are
manufactured from AISI 4137H steel with increased hardenability giving a very uniform microstructure and
excellent mechanical properties through the cross section of the tool joint.
All DP-Master Tubes are supplied by Tianjin Pipe Corporation (TPCO) which is a leading global producer of
seamless tubes with modern state-of-the-art facilities. TPCO produces the Green Tubes according to DP-
Master’s chemistry and the tubes are then Austenitized, Quenched and Tempered in DP-Master’s own Heat
Treatment plant. All mechanical testing is carried out in our own laboratory on site.
Increase Drill Pipe Life
Hardbanding on the tool joint or wear pad extends the service life of drill pipe. It can be applied in several configurations to suit clients’ requirements. Hardbanding is applied under closely controlled conditions resulting in a uniform, low porosity, wear resistant surface. DP-Master is authorised to apply market proven hardbanding products including ARNCO 100XT / 300XT, Tuboscope TCS8000 / TCSTI, Duraband NC, Tuffband NC and Castolin OTW 12.
Extra length tool joints can be incorporated into DP-Master drill pipe to increase tong space to provide several recut to the connections.
DP-MASTER DRILL PIPE
Public Release 15 Aug 2011
DP-Master Drill Pipe Grades Table
HARDNESS
MIN MAX MIN MAX MAX TEMP MIN AVG. SINGLE
psi psi psi psi % HRC °F ft-lb ft-lb REQ'D % SYMS
E-75 75,000 105,000 100,000 ― API ― room 40 35 no ― API
X-95 95,000 125,000 105,000 ― API ― room 40 35 no ― API
G-105 105,000 135,000 115,000 ― API ― room 40 35 no ― API
S-135 135,000 165,000 145,000 ― API ― room 40 35 no ― API
DPM-CY105 105,000 120,000 115,000 ― API 30 room 40 35 yes 85 CY
DPM-95 S 95,000 110,000 105,000 ― API 26 room 40 35 yes 70 S
DPM-105 S 105,000 120,000 115,000 ― API 30 room 40 35 yes 70 S
DPM-95 SS (IRP) 95,000 110,000 105,000 130,000 17 min 25 room 59 59 yes 85 SS
DPM-105 SS (IRP) 105,000 120,000 115,000 140,000 17 min 28 room 59 59 yes 85 SS
High Strength V-150 150,000 165,000 160,000 ― API ― room 50 ― no ― API
API 5DP API 120,000 ― 140,000 ― API ― room 40 35 no ― ―
DS 130,000 ― 140,000 ― API ― room 40 35 no ― ―
MT 130,000 ― 140,000 ― API ― room 40 35 no ― ―
CY 105,000 115,000 115,000 ― API 30 room 40 35 no ― ―
S 105,000 120,000 115,000 ― 15 min 30 room 40 35 yes 50 ―
SS 110,000 125,000 125,000 145,000 15 min 30 room 66 66 yes 65 ―
Charpy impact test at full size specimen
% SYMS as per NACE TM-0177 test method A
YIELD STRENGTH TENSILE STRENGTH CHARPY
GRADE
ELONG
ATION TOOL
JOINT
NACE
General Use
Sour Service
SPECS.
API 5DP
DP-
Master
Series
DP-
Master
Series
DRILL PIPE BODY GRADE MECHANICAL PROPERTIES
TOOL JOINT GRADE MECHANICAL PROPERTIES
General Use
Sour Service