WE PRODUCE BUTT WELD PIPE FITTINGS,HOPE WE CAN COOPERATE WITH U IN LONG TERM 1.name: FLANGE2.Size:From 1/2" to 48" (Seamless pipe fittings). From 26" to 72" (Seam pipe fittings)3.Wall thickness: Sch5-Sch160,XXS4.Standard: ISO, SNSI, JIS, DIN, GB/T12459,GB/T13401,ASME B16.9.SH3408 SH3409, HG/T21635,HG/T21631,SY/T050105.Material: A234-WPB.A420-WPL6.A234-WP12.A234-WP11.A234-WP5.A403-WP304. A403- ...