ERW720 H.F. Straight Welded Pipe Production Line ERW720 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 355mm-720mm in OD and 6.0mm-22.0mm in wall thickness, as well as corresponding square and rectangular pipe. Products: architectural structure tubes, API pipes and other products. Equipment advantages China's largest straight seam welded pipe production line Apply to high strength steel and big thickness Raw material can be steel coil and single plate ZTF forming process save roller up to 60% With direct square forming technology, one set of roller can produce all pipe sizes Electric control and auto matic adjustment, high precision,high roller change speed Basic Technical In formation of Welded Pipe Production Line Product&yield Round Pipe 355mm-720mm Thickness:6.0mm-22.0mm Square & rectangle tube 300mm300mm -600mm600mm Thickness:6.0mm-22.0mm Length 6m-12m Length Tolerance: �3mm Production Speed 20 m/min Production capacity 180,000ton/year Consumption Mill installed capacity 1400 kw Line Area 400m(length) 40m (width) worker 6-8 workers Raw Material Carbon steel coil & steel plate Q235B(ASTM GR�D,�?s 230) & High-strength steel