Standard Welded Heavy Weight Drill Pipe

PRODUCT CENTER

Heavy Weight Joint						Heavy Weight Pipe Body
Joint OD Range	Min. Yield Strength	Min. Tensile Strength	Min. Elongation (%)	Charpy V-notch Longitudinal Impact Toughness, Full Size, 21°C (Avg/Min)	Min. Hardness (HBW)	Min. Yield Strength	Min. Tensile Strength	Min. Elongation (%)
110 ksi	110 ksi	140 ksi	13	40/35 ft-lb	285	55 ksi	95 ksi	18
758 MPa	758 MPa	965 MPa	13	54/47 J	285	379 MPa	655 MPa	18
100 ksi	100 ksi	135 ksi	13	40/35 ft-lb	285	55 ksi	95 ksi	18
689 MPa	689 MPa	931 MPa	13	54/47 J	285	379 MPa	655 MPa	18

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