Welding cracks: the most common serious defect in welded parts. Under the combined effect of welding stress and other brittle factors, the bonding force of metal atoms in local areas of the welded joint is destroyed, resulting in a new interface gap. It has the characteristics of sharp notches and l

The maximum heat-resistant temperature of 20# steel seamless steel pipe in the national standard GB/8163-2018 is 425℃. Many people say that the lowest temperature that 20# steel in GB/T8163-2018 can withstand is -20℃, and the maximum heat-resistant temperature is 425℃. Because the operating temperat

First, what are the welding methods for stainless steel welded pipesThere are many welding methods for stainless steel welded pipes, and the most commonly used methods for stainless steel welded pipes can be divided into the following methods.1. Argon arc welding: When stainless steel is welded by a

First, what are square steel pipes: square steel pipes are a type of steel pipe, that is, square pipes. They are called square steel pipes together with rectangular pipes. They are made of strip steel after processing and are widely used in the construction field.Second, how much does a square steel

First, what is the difference between anti-corrosion steel pipes and galvanized steel pipes?Although anti-corrosion steel pipes and galvanized steel pipes are both pipes, there are certain differences in material, manufacturing process, anti-corrosion performance, and usage scenarios.1. Different ma

Seamless steel pipes, as an indispensable material in the modern industrial field, have a vital impact on the safety and stability of various engineering projects. However, various defects often occur in the production and use of seamless steel pipes. These defects not only affect the performance of

Steel tee pipe joints are also called tee pipe joints or tee pipe joints. The main pipe adopts a tee joint. It has three vacancies, namely one inlet and two outlets; or two inlets and one outlet. It is a chemical pipeline fitting. It has T-shaped, Y-shaped, equal-diameter pipe holes and reducing-dia

Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, are steel-plastic composite steel pipes that use steel pipes as the base and weld a layer of plastic anti-corrosion layer on the inner surface of the steel pipe (b

First, the metallurgical properties of manufacturing materialsThe raw material for spiral welded steel pipe is hot-rolled coil, and straight seam welded steel pipe is made of steel plate socket. The weight of the alloy contained in the coil is less than that of the steel plate. It is for this reason

There are three ways to clean the material in the steel pipe.Methods for cleaning the inside of the steel pipe 1. Chemical cleaning: Chemical cleaning pipelines use chemical agents to temporarily modify the pipelines. Temporary pipelines and circulating pump stations can be used to perform circulati