... and mould, welded pipe roller, stainless steel pipe mould for round/square/shaped tube. 2. Precise with only 0.05mm tolerance ... , tube frame, special-shaped mould, etc.5. Specification range for round pipe: 5-325mm.6. Specification range for square pipe: F10 ... on the angle does not exceed ±0.05mm. High Hardness Welding Mould Roll for SS Tube