Liaocheng Jinquan Construction Machinery Co.,Ltd can provide DTH Friction Welding Drill Pipes (DTH Tubes) and Rotary Drilling Friction Welded Drill Rods (Rotary Pipes) with A.P.I. Connections.
DTH Drill pipe is made of high quality material detected by spectrograph, impact and tension test. With fully digitized processing line introduced from Japan with integral heat treatment equipment. Anti adhesion thread with nitrogen treatment on surface make it easier for handling. Metallography detection, hardness test, magnaflux inspection, ultrasonic flaw detection, tensile test and impact test ensure products quality.
DTH drill rods out diameter: 76mm, 89mm, 102mm, 114mm; DTH drill rods thread sizes: 2 3/8âAPI Reg, 2 7/8â API Reg, 3 1/2â API Reg, 4 1/2â API Reg, 2 3/8â API IF, 3 1/2â API IF; DTH drill rods length: 1000mm, 1500mm, 2000mm, 30000mm, 6000mm; DTH drill rods production technologies: Friction welding.
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