... , RST37.2, S235, C22.8, F304, F304L, F316, F316L, 316Ti5) Surface Treat: Anti-rust Oil, Transparent/ Yellow/Black Paint, Zinc, Hot ... ) Delivery time: Within 30days for 2,000tons.9) Supply Capacity: 20,0000 tons per year. stainless steel flange for welding fixing electrical heated tube ...