... 3.Size:DN15-DN2000 4.Standard:ANSI,ASTM,MSS,JIS,DIN,EN ect. 1. Standard ANSI,ASTM,JIS,DIN,GB etc.2. TypeSlip ... 8 etc.5. Used forPetroleum, chemical, power, gas, water, line pipe, heat exchanger, shipbuilding, construction, etc.6. Production processraw material--cutting ... standard flange on the basis of drawing or sample supplied by clients. IF YOU NEED , PLEASE CONTACT US. Forged flat face DIN standard ...