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DTH Drill Pipe O.D.102mm (No Flat) for mining
- Outer Diameter : 102mm
- Length: 4000-6000mm
- Wall Thickness: 8.5mm
- Rod Materials: R780
- Thread Connect Material: 35CrMo
- Thread Pin/Box: API 2-7/8 REG,3-1/2 REG,NC31
- Process: Upsetting treatment to reduce the weight of rod while keep the strength on the weld