1.steel pipe flange,ansi flange,tube flange for pipe joint 2.1/2'' to 60'' 3.high quality 4.T/ ... T,L/C 5.API,CE,ISO flange steel pipe flange,ansi flange ... Size range: From ½” up to 60” "4. Schedule:SCH STD, XS, XXS, SCH 10 ~ SCH 1605. STANDARDS:ANSI, ISO, JIS, DIN, BS ... and certification:ASTM A182 F304/304L, F316/316L, F321, F347, ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC. ...