... BS4504, SABS1123, EN1092-1, UNI, AS21293) Type: Plate, Slip-on, Welding Neck. Thread, Socket Weld, Blind Flanges4) Material: A105, ... F304, F304L, F316, F316L, 316Ti5) Surface Treat: Anti-rust Oil, Transparent/ Yellow/Black Paint, Zinc, Hot dipped Galvanized.6) Packing ... to visit our factory, and establish long term cooperation. 3:COMPETITION: a:Quality control : ISO 9001 International Quality Control ...