ASTM a36 wide flange Materials:S235JRG2/RST37.2, C22.8/P250GH, ... wide flangeThe specification is as follows:1-American Standard:ANSI B 16.5, ASTM, ASA, API-605, ... DIN2545, PN6, PN10, PN16, RST37.2, CC22.8 etc.;3-British Standard:BS4504, NP16, NP25, NP40, BS10, TABLE D ... E, TABLE H, BS10, BS4504, SAN1123, 1000/3, 1600/3, 2500/3, T/D, T/E, T/F, AS2129, ... for vessel transportation ASTM a36 wide flange