... mould: steel tube, plum tube, flat tube, oval tube, fan-shaped tube, polygonal tube, single and double groove pipe, tube frame, special ... -shaped mould, etc.3. Specification range for round pipe ... *F10-F300*F300.5. Material for the mould: Cr12Mov/SKD11.6. Tolerance range: ±0 ... 8. Selection: To produce first-class pipe mould, we must have first-class raw material ...