... :SS400,A105 ,Q235 etc. 3.Size:DN15-DN2000 Carbon ANSI Flanges 1. Standard ANSI,ASTM,JIS,DIN,GB ... Size 1/2-78 inch (DN15-DN2000)4. Material Carbon Steel Material: A105, SS400, SF440 RST37.2,S235JRG2,P250GH ... ,C22.8 etc.5. Used forPetroleum, chemical, power, gas, water, line pipe, heat exchanger, shipbuilding, construction, etc.6 ... quantity11.Supply Capacity 700 tons per month Carbon ANSI Flanges