... , DIN, UNI, BS, JIS, KS standards. the materials are ASTM A105, ST37, Q235, 20 Steel, S.S 304, 304L,316, 316L ... : DIN2527, DIN2573, DIN2576, DIN2633, DIN2566 DIN2543, DIN2573, DIN2544/2545, DIN 2632 / 2634/2635---including PN6, PN10, PN16, PN26, PN40 Flanges; UNI FLANGES ... -Neck, Blind Flanges; BS4504 / EN1092-1 / TABLE-E FLANGES: PN10, PN16, PN25, PN40 Flanges;JIS B2220 / KS B1503 FLANGES: 5K, 10K ...