High Strength Welded Drill Pipe

PRODUCT CENTER

Grade	Pipe Body			Tool Joint
Grade	Min. Yield Strength	Min. Tensile Strength	Charpy V-notch Longitudinal Impact Toughness, Full Size, 21°C (Avg/Min)	Min. Yield Strength	Min. Tensile Strength	Hardness (BHN)	Charpy V-notch Longitudinal Impact Toughness, Full Size, 21°C (Avg/Min)
75	75 ksi	95 ksi	40/35 ft-lb	120 ksi	140 ksi	285–341	40/35 ft-lb
75	517 MPa	655 MPa	54/47 J	827 MPa	965 MPa	285–341	54/47 J
90	90 ksi	105 ksi	40/35 ft-lb	120 ksi	140 ksi	285–341	40/35 ft-lb
90	621 MPa	724 MPa	54/47 J	827 MPa	965 MPa	285–341	54/47 J
110	110 ksi	125 ksi	40/35 ft-lb	120 ksi	140 ksi	285–341	40/35 ft-lb
110	758 MPa	862 MPa	54/47 J	827 MPa	965 MPa	285–341	54/47 J
120	120 ksi	130 ksi	40/35 ft-lb	120 ksi	140 ksi	285–341	40/35 ft-lb
120	827 MPa	896 MPa	54/47 J	827 MPa	965 MPa	285–341	54/47 J
130	130 ksi	140 ksi	40/35 ft-lb	130 ksi	140 ksi	302–363	40/35 ft-lb
130	896 MPa	965 MPa	54/47 J	896 MPa	965 MPa	302–363	54/47 J

Drill Pipe Manufacturing Process (English Version)

nspection → End upsetting → Integral heat treatment → Pipe straightening → Pipe inspection (leakage, ultrasonic) → Physical and chemical testing → Finished pipe inspection → Cold straightening → Pipe end machining

Tool joint material incoming inspection → Sawing and forging (if necessary) → Joint upsetting → Joint marking → Joint heat treatment → Joint Brinell hardness testing → Physical and chemical testing → Ultrasonic inspection
Make-up/break-out test (if necessary) → Phosphating → Magnetic particle inspection → Joint marking → Cold rolling (if necessary) → Finished joint inspection → Joint thread machining → Joint profile machining
Final joint inspection

Drill pipe & joint end face preparation → Friction welding → Weld post-heating → Weld flash removal → Weld heat treatment (quenching, tempering) → Physical and chemical testing → Weld finishing → Magnetic particle inspection
Ultrasonic inspection → Finished product inspection → Hardbanding (if necessary) → Internal coating (if necessary) → Measuring, weighing and marking → Final inspection → Packaging → Delivery