... 5.API,CE,ISO flange steel pipe flange,ansi flange,tube flange for pipe joint 1.Products ... SCH STD, XS, XXS, SCH 10 ~ SCH 1605. STANDARDS:ANSI, ISO, JIS, DIN, BS, GB, SH, HG, QOST ... fittings and Specialized NACE & HIC Fittings. l FLANGES FLANGESProduction NameSlip-on welding flange;welding nece flange;socket ... certification:ASTM A182 F304/304L, F316/316L, F321, F347, ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST ...