The first may be due to the stress of the spiral seam submerged arc welded steel pipe. That is, the residual stress and welding stress after the steel pipe is formed. Secondly due to the presence of hydrogen. If the flux is not dried enough, the preheating temperature is not sufficient or the prehea

When purchasing steel pipes, many customers often ask us which steel pipe is more suitable for spiral welded steel pipe and welded steel pipe. In fact, in many cases, the customer does not inform the specific situation of the project, and we cannot make relevant recommendations. However, here are so

In the application of daily projects, the use of anti-corrosion steel pipes has become more and more common, and this makes anti-corrosion steel pipes a "sweet pastry" in procurement and project selection. What are the advantages of anti-corrosion steel pipes in practical applications? Why would the

It is mainly for steel pipes, which are prone to corrosion reactions, and there are certain hidden dangers to equipment damage after corrosion. After removing all kinds of oil, rust, oxide scale, welding spots and other dirt, the corrosion resistance of steel can be greatly improved.If there is dirt

The LSAW steel pipe heat treatment mode can also develop building structural tubes, boiler tubes, and marine pipelines for thick-wall LSAW steel pipe. High-frequency straight seam welded pipes should also pursue product diversification to produce precision pipes for automobiles, light industry, chem

Product Name: Seamless steel pipeMaterial: Carbon steelDiameter: 83mmQuantity: 1000 tonsApplication: It is used for the energy project.Thanks to the new customer in Egypt. Wish many cooperations have given the customer full confidence in THREEWAY STEEL in the future.

There are two possibilities for the formation of surface defects of spiral steel pipes: one is that the workpiece itself is not plastic in the process of deformation, resulting in cracks and outward folding; the other is that the surface of the material is oxidized to cause surface defects, and the

The prefabricated submerged arc steel pipe fittings and assemblies in the processing plant must be completed, that is, all the welds have been welded, the flange joints are installed, and all the flange bolts of the long-term backing plate are worn and tightened. The comparison design value of the e

Product: Metal coated formable steel. Material: EN10346. Specification: 1.5mm*1000mm*3000mm. The new customer in the Mexico construction industry product will be shipped. Here is the product before shipping.

What are the main steel pipe fittings?1. The steel pipe fittings used to connect the pipes are: flanges, unions, pipe clamps, clamps, clamps, hose clamps, etc.2. Steel pipe fittings that change the direction of the pipe: elbows, elbows.3. Steel pipe fittings for changing the pipe diameter: reducing