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api square kelly,drilling kelly bar,kelly drilling tools
Product Description api square kelly drilling kelly bar kelly drilling tools API 7 1 Drilling Square Kellys We can manufacture square drill rods and hexagonal drill rods as per requirements of customers They are made of AISI 4142H 4145H forged or rolled alloy structural steel Quenching plus...
Rotary Drilling Kelly Bar, Hf168A Rotary Drilling Rig for Sale
Friction Kelly Bar
Certification CE RoHS GS ISO 9001 Friction Kelly Bar Kelly bar is the key part of a drilling machine and its quality directly affects the performance of the whole machine The main purpose of kelly bar is to transfer the torque of rotary drive and crowd pressure of the crowd system to the drilling...
Interlocking Kelly Bar
Certification CE GS ISO 9001 Interlocking Kelly Bar Interlocking Kelly Bar is the key part of a drilling machine and its quality directly affects the performance of the whole machine The main purpose of kelly bar is to transfer the torque of rotary drive and crowd pressure of the crowd system to...
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