1.steel pipe flange,ansi flange,tube flange for pipe joint 2.1/2'' to ... ,L/C 5.API,CE,ISO flange steel pipe flange,ansi flange,tube flange for pipe joint 1.Products Items:Slip ... . Schedule:SCH STD, XS, XXS, SCH 10 ~ SCH 1605. STANDARDS:ANSI, ISO, JIS, DIN, BS, GB, SH, HG, QOST, ETC.6 ... and certification:ASTM A182 F304/304L, F316/316L, F321, F347, ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC. ASME ...