适用行业
能源矿产, water well drilling
Product name
High Strength Steel drilling tools Drill Pipe Coupling / adapter
Size
85mm 105mm 121mm 127mm
Connection type
Male and female
Thread type
NC26 NC31 NC38 NC46 NC50 NC56
Material
35CrMo/40Cr/4137H
Special craft
Hardening and tempering