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Quality Standard:ISO2901-4, DIN103, GB/5796 Clearance: 7e, higher precision availabl...
The implemental standards for the oil casings are API 5CT; the specifications include...
We are professional manufacturer of carbide thread turning inserts in China, our prod...
price:US $2-10 / Piece Material: Steel, plastic, steel-plastic Packing:bundle, ply...
Couplings with PIN and BOX Outer diameter:4 1/2"-20" (114.3mm-508mm) Wall thickness...
China new steel holding group co., Ltd is one of the largest iron and steel productio...