This is how the drill rod is produced.

Inspection of hollow steel-blanking according to the length of the drill rod-machining threads at both ends of the rod body (MF drill rod needs to forge female thread ends first)-machining handle groove-

Hole steel inspection-blanking according to the length of the drill rod-processing the threads at both ends of the rod body (MF drill rod needs to forge female thread ends first)-processing handle groove-deep well type carburizing furnace overall carburizing-deep well type air cooling tower air cooling quenching-deep well type tempering furnace tempering treatment-straightening-shot blasting strengthening treatment-phosphating anti-corrosion treatment-inner hole cleaning-surface painting anti-plastic sleeve-thread part-production label-storage.

T38 thread drill pipe roadway excavation, anchoring operation, tunnel engineering

Underground mining 203mm T51 reaming bit

T38 thread drill pipe roadway excavation, anchoring operation, tunnel engineering

Underground mining 203mm T51 reaming bit

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