Manufacturing Process For Forged One-Piece Drill Pipe

Raw material(steel tube)

Chemical composition analysis

Dimension,
appearance

Blanking and feeding

Size inspection


Pipe end thickening(upsetting)

Size inspection

Shaping inspection

Raw material(steel tube)

Chemical composition analysis

Dimension,
appearance

Blanking and feeding

Size inspection


Pipe end thickening(upsetting)

Size inspection

Shaping inspection

Non destructive test

Ultrasonic test of drill pipe body

Ultrasonic test of pipe end upsetting area

Heat treatment
(quenching and tempering)

Property test(sampling as per furnace batch)

Hardness test(sampling as per furnace batch)

Metallographic structure analysis(sampling as per furnace batch)

Upsetting area deoxidation and decarbonization layer(rough turning)

Size inspection

Non destructive test

Ultrasonic test of drill pipe body

Ultrasonic test of pipe end upsetting area

Heat treatment
(quenching and tempering)

Property test(sampling as per furnace batch)

Hardness test(sampling as per furnace batch)

Metallographic structure analysis(sampling as per furnace batch)

Upsetting area deoxidation and decarbonization layer(rough turning)

Size inspection

Thread processing by CNC

Dimension test(thread gauge,single test instrument)

Screw thead magnetic flux leakage test(special non-destructive test equipment for thread)

Shot blasting on drill pipe surface
Thread surface treatment
Thread processing by CNC

Dimension test(thread gauge,single test instrument)

Screw thead magnetic flux leakage test(special non-destructive test equipment for thread)

Shot blasting on drill pipe surface
Thread surface treatment
Finished product
Marking, painting and packing
Finished product
Marking, painting and packing

“ High-Quality Drill Pipe ”

We carefully control all phases of the manufacturing process,
our rods are manufactured for maximum rod strength.

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