Zhongtai Group is established in 2000, locates in Shijiazhuang. We are an ISO9001 certified pipe making machine and cold rolled section steel forming machine manufacturer，one of the executive directors of China Cold-formed Steel Structure Association and one of China's top ten pipe making machinery brands.
ERW steel pipe/tube making machine, the process is unwinding the steel coil and make the head and tail of the coil butt-welded in the strips preparation section. Then the strips fed into accumulator and pulled out of the accumulator at a constant speed passed through the unit. Next, the strip is formed into an open tube in the forming unit. After that, it is welded to a straight welded tube by solid-state high-frequency welding method, then to removal of external burrs and water cooling.
ERW pipe making machine series are high frequency longitudinal welded pipe production line / pipe making machine / tube mill line that designed to produce welded pipes of 8mm-720mm in OD and 0.3mm-22mm in wall thickness, as well as corresponding square and rectangular pipe.