Oil Country Tubular Goods (OCTG) Pipes - are pipes used in wells in oil and gas industries consisting of casing, tubing, drill pipe, conductor pipe, couplings & pup joints, most of them are Seamless Steel Pipes.
China API SPEC 5CT Grade N80 Tube Coupling Supplier Derbo Provides API SPEC 5CT Grade N80 Tube Coupling, Size 3-1/2 Inch EUE, Black Painting Treatment.