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