... A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310 ... .: NO. 77, Jianzhong South Street,Longwan, Wenzhou,China.-325024ZHEJIANG HUATIAN STAINLESS STEEL MANUFACTURING CO., LTD. STAINLESS STEEL FLANGES