... steel flange 2. Size range: 15-1300A(1/2 to 52") 3. Standard: DIN, UNI,GB, BS, ASME, ANSI,API,ASA,JIS ... to 52")3. Standard: DIN, UNI,GB, BS, ASME, ANSI,API,ASA,JIS etc.4. Material: F304(1.4301), F304L(1 ... the dimentions in accordance with your specifications and drawings. This flange can be applied to petro-chemical project, pipe engineering, public ...