ERW Steel Pipe

Frequency welded pipe characterized by: welding speed large and  welding heat affected zone small, weld the workpiece may not clean up, can weld  thin-walled tube, can weld metal pipe.Production process depends mainly on the variety of materials, from raw materials to finished products need to go through a series of processes, these processes need kinds of machinery and welding equipment, electrical control, testing equipment, such equipment and fittings in accordance with a different process requires more reasonable arrangement, high frequency welded typical process: Slitting - unwinding - strip leveler - head and tail cut - steel welding - looper accumulator - forming - welding - deburring - sizing - testing - fly cut - initial inspection - straightening steel - pipe processing - hydrostatic test - flaw detection - printing and coating - finished.