steel tube, plum tube, flat tube, oval tube, fan-shaped tube, polygonal tube, single and double groove pipe, tube frame ... , welded pipe roller, stainless steel pipe mould for round/square/shaped tube.b. Precise with only 0.05mm tolerance. c. With ... , polygonal tube, single and double groove pipe, tube frame, special-shaped mould, etc.3. Specification range for round pipe: 5-325mm. ...