erw line pipes
Get Price Quote
ERW (Electrical Resistance Welding) pipes are manufactured by cold forming of steel coil into a round cylindrical shape. In the initial times it was done with the low frequency A.C. current to heat the edges. Now, since 1970 the low frequency process changed to high frequency A.C. current to produce a higher quality weld.
erw line pipes
Get Price Quote
erw line pipes, Glass Water Pipe, Steel Water Pipes
Best Deals from ERW Line Pipes