Common anti-corrosion technology of spiral steel pipeAnti-corrosion spiral steel pipe plays an important and different role in people's daily life. Anti-corrosion spiral steel pipe generally refers to the use of special technology to treat ordinary spiral steel pipe with anti-corrosion treatment, so

The purpose of preheating the spiral steel pipe before welding(1) Preheating can slow down the cooling rate after welding, make hydrogen diffuse and escape in the weld metal, and avoid cracking caused by hydrogen. It can also reduce the degree of hardening of welds and heat-affected zones, and impro

The standard for storage of anti-corrosion steel pipes1. The appearance of the anti-corrosion steel pipe in and out of the warehouse needs to be inspected as follows:① Check one by one to ensure that the surface of the polyethylene layer is flat and smooth, and there are no dark bubbles, pits, wrink

Instructions for use and maintenance of straight seam steel pipesWhat is a straight seam steel pipe?Longitudinal seam steel pipe does not refer to a certain type of steel pipe, but a large type of welded pipe. It is made of steel strip. The steel pipe made by using the straight seam high-frequency w