Size : 1/2"nb to 60"nb In class : 150 Lbs, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs din Standard Nd-6, 10, 16, 25, 40 Etc.specifications as per the International Standardastm, Asme, Api, Aisi, Bs, Ansi, Din, Jis, Mssp, Nace materials :stainless Steel Socket Weld Flange Ss Swrf Flangeastm A182grade : F 304, 304l, 304h, 309s, 309h, 310s, 310h, 316, 316ti, 316h, 316l, 316ln, 317, 317l, 321, 321h, 347, 347h, 904l.duplex Steel Socket Weld Flange astm / Asme A/sa 182 Uns F 44, F 45, F51, F 53, F 55, F 60, F 61.astm Sa 182 F1/f5/f9/f11/f22/f91carbon Steel Socket Weld Flange Cs Swrf Flangeastma 105 Gr. F42/46/52/56/60/65/70low Temperature Carbon Steel Socket Weld Flange Ltcs Swrf Flangea350 Lf2/a350 Lf3nickel Alloy Socket Weld Flange :standard: Astm / Asme Sb 564 / 160 / 472.uns 10276 (hastelloy C 276 Socket Weld Flange )uns 2200 (nickel 200 Socket Weld Flange ), uns 2201 (nickel 201 Socket Weld Flange ), uns 4400 (monel 400 Socket Weld Flange ), uns 8020 (alloy 20 Socket Weld Flange )uns 8825 (inconel 825 Socket Weld Flange ), uns 6600 (inconel 600 Socket Weld Flange ), uns 6601 (inconel 601 Socket Weld Flange ), uns 6625 (inconel 625 Socket Weld Flange ), copper Alloy Socket Weld Flange astm / Asme Sb 61 / 62 / 151 / 152.c 70600 (cu -ni- 90/10) Cupro Nickel Socket Weld Flange c 71500 (cu -ni- 70/30) Copper Nickel Socket Weld Flange uns No. C 92200, Uns No. C 83600, Uns No. Uns No C 10100, c 10200, C 10300, C 10800, C 12000, C 12200 alloy Steel Socket Weld Flange as Swrf Flangevalue Added Serviceshot Dip Galvanizing , epoxy Coating, test Certificatemill Test Certificate as per En 10204 / 3.1b