... :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 ... heat treatment--marching--inspection.7. Inspection factory in-house self check or Third Party inspection8. Packing wooden pallets, ... quantity11.Supply Capacity 700 tons per month Carbon ANSI Flanges