... :SS400,A105 ,Q235 etc. 3.Size:DN15-DN2000 Carbon ANSI Flanges 1. Standard ANSI,ASTM,JIS,DIN,GB etc.2. TypeSlip ... , power, gas, water, line pipe, heat exchanger, shipbuilding, construction, etc.6. Production processraw material--cutting--heating--forging--heat treatment--marching--inspection ... your quantity11.Supply Capacity 700 tons per month Carbon ANSI Flanges