We supply all range of couplings as per API specifications in all groups for casings and tubing. Our couplings conform to specifications set by American Petroleum Institute (API). We supply all kinds of pipe nipples&sockets, clamps, pipe couplings and stamping part with good quality and competitive price. Main Feature: High Precision in Size and shape Good corrosion resistance High collapse strength Excellent comprehensive mechanical properties High connection strength and salability Constant mechanical properties at high temperature Advantage 1.Full-set quality control 2.Strict quality inspection 3.Tight Tolerances 4.Technology Support 5.As international standard 6.Good quality and prompt delivery