ERW vs EFW for Stainless Steel Welded Pipe

What are ERW pipes? ERW steel pipes are created with low or high frequency resistance which very important in this. With steel plates welded with the longitudinal welds the circular pipes are welded. Steel coils are used to make Stainless Steel 253 MA EFW Pipes: the coil is first uncoiled, then flattened, cut, and lastly made […]

