1) Standard: ANSI, DIN,BS, JIS, UNI, etc 2) Material: 304, 316, 304L, 316L, 321, Q235, A105, etc. 3) Certificate: CE, ISO9001 CERTIFICATESWe have got the CE and ISO9001. MATERIAL304, 304L, 316, 321, 310S, 1.4301, 1.4372, 1.4319, 1.4401, 1.4845, A105, 20#, Q235, etc(Notes: We can provide the CMTR and the final products can be detected by XRF) CRAFTSWe are a professional manufacture of flange and ...