... Flange, Alloy flange,Plate Flange large size of stainless steel flange ANSI Flange Size:1/2" ~ ... steel, Stainless steel and Alloy steel etc. Market: America, Europe, Korea, South East Asia and Middle East countries.Surface treatment ... -Raw material inspection, cutting, heating, gorging, heat treatment, machining, drilling, marking, washing, final inspection, ... . large size of stainless steel flange