... ST37-2EN10241, BS1387, ISO7-1,DIN2999, DIN2986SpecificationFull socket, Half socketSurfaceHot dipped galvanized,Cold galvanized, BlackSize1/8"---6"GradeHeavy ... as Buyer's requestCertificateISO9001ApplicationSteam, air, gas and oil pipes or for many other fluidsO.D.1/8”- ... British standard, American standard and DIN standard Kinds of screwed half coupling: bends, elbows ,tees, crosses, sockets, caps, ...