... square pipe: F10*F10-F300*F300. 1. Roller and mould for round pipe, square pipe, shaped pipe, etc. ... single and double groove pipe, tube frame, special-shaped mould, etc.3. Specification range for round pipe: 5- ... pipe: F10*F10-F300*F300.5. Material for the mould: Cr12Mov/SKD11.6. Tolerance range: ±0.05mm.7 ... -63HRC.8. Selection: To produce first-class pipe mould, we must have first-class raw material. We ...