... pressure in the squeeze roller extrusion welding done, then cooling, sizing and straightening coarse and become the required specifications ... , steel forming, high-frequency welding, to outer burr, cooling, pipe sizing, pipe straightening, cutting, cutting Equipment List1. Double side uncoiler 2 ... Removing Frame(inside and outside burr) 3.7 Water Cooling System 3.8 Sizing Machine 3.9 Roller System ...