... single and double groove pipe, tube frame 1. Roller and mould for round pipe, square pipe, shaped pipe, etc. 2. Precise ... fan-shaped tube, polygonal tube, single and double groove pipe, tube frame, special-shaped mould, etc.3. Specification ... 60-63HRC.8. Selection: To produce first-class pipe mould, we must have first-class raw material. ... exceed ±0.05mm. Professional Stainless Steel pipe forming mold