... WP316L/TP316L, WP321/TP321 , WP310/TP310…..SurfactreatmentCarbon steel:Shot blasted, black painting, rust-proof oil, transparent oil ... , galvanizing,, hot galvanizingAlloy steel:Shot blasted, black painting, rust-proof oil, transparent ... oil, galvanizing,, hot galvanizingStainless steel: pickled,Polish Application FieldsChemical Industry /Petroleum Industry ...