... ~10020~7020~60Main motor power(kw)5575132160200High-frequency equipment(kw)100 OR 200200200 OR 300300300OR400Of ... butt cut, hopper, steel straightening, steel forming, high-frequency welding, to outer burr, cooling, pipe sizing, ... 3.2 Roller System of Forming 3.3 Seam Guide 3.4 High Frequency Induction Welding Machine ... 3.5 Roller System for Moving 3.6 ...