... tube, oval tube, fan-shaped tube, polygonal tube, single and double groove pipe and so on TypeSpecification (mm)MaterialTolerance ranges(mm ... tube, oval tube, fan-shaped tube, polygonal tube, single and double groove pipe, tube frame, special-shaped mould, etc.5. Specification ... angle does not exceed ±0.05mm. High Hardness Welding Mould Roll for SS Tube