ERW tubes or pipes are straight seams electric resistance welded pipe. It is manufactured by cold-forming a sheet of steel into a cylindrical shape. Current is then passed between the two edges of the steel to heat the steel to a point at which the edges are forced together to form a bond without the use of welding filler material. In general, resistance welding methods are efficient and cause little pollution
In the past few years, due to modern welding technologies (such as HFI and HFW, high frequency welding) adopted by ERW pipe manufacturers, ERW pipes have become an effective substitute for seamless pipes in terms of price and performance. Over time, these advances in welding technology have reduced the technical advantages of seamless pipes and ERW pipes, at least in some applications (medium/low pressure and medium temperature) they are interchangeable.
ERW pipes are manufactured starting from steel coils, that are at first uncoiled, cut, processed, welded, and tested as shown in the picture below.
As a manufacturer with 30 years of experience, NEW VICTOR provides complete line and ideal solutions. NEW VICTOR will recommend the most suitable models and configurations according to customers’ requirements, and design the most suitable plant layout. We also have the experience in turnkey projects.
The outer diameter deviation of welded pipe shall be within 0.02mm, the ovality deviation shall be within 0.02mm, and the straightness of welded pipe shall be less than 0.8mm/m. Weld quality is stable without cracking
Online RQCS roller quick change system can complete roll change in 10 minutes and resume production in 20 minutes
The whole line adopts PLC control, touch screen operation, equipped with Chinese and English interface (language can be changed according to customer preference
By change the roller, High frequency ERW tube mill line can produce pipes of different shapes and sizes.