Large-diameter steel pipes commonly used in industrial projects are widely used in various industrial projects, but what are the classifications for specific application environments?1. Petrochemical: crude oil, refined oil, petrochemical raw material finished product pipelines, and oil field pipeli

Deviation of large-diameter steel pipes in production: Common large-diameter steel pipe size range: outer diameter: 114mm-1440mm wall thickness: 4mm-30mm. Length: can be made into fixed length or unfixed length according to customer requirements. Large-diameter steel pipes are widely used in various

Large-diameter flanges are a type of flange that is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges are widely used, and the scope of use is determined according to different characteristics. They are mostly used in relativel

Spiral steel pipe is mainly used as fluid pipe and piling pipe. After the steel pipe is made, if it is used for water transportation, it will generally be treated with anti-corrosion on the inner or outer surface. The general anti-corrosion includes 3PE anti-corrosion, epoxy coal tar anti-corrosion,

A high-pressure seamless steel pipe is actually a high-pressure boiler pipe. Because high-pressure seamless steel pipe is usually used in the pipeline of high-temperature and high-pressure boilers, it is also called boiler pipe. Although the above two pipes are called differently, they are actually

Large-diameter plastic-coated steel pipes are mainly made of spiral steel pipes or seamless steel pipes as the base material. It is not recommended to use straight-seam welded pipes. Straight-seam welded pipes are usually not as good as spiral steel pipes in terms of pressure bearing, and the cost i

Carbon steel pipes are a common and important building material, widely used in industry, construction, transportation, and other fields. GB9948 is China's national standard for carbon steel pipes, which stipulates the technical requirements, test methods, and scope of use of carbon steel pipes.Firs

Galvanized steel pipes are generally coated with a layer of zinc on the outside of low-carbon steel, and the galvanized layer is generally 20μm thick. The melting point of zinc is 419°C and the boiling point is about 908°C.1. The weld must be polished before weldingThe galvanized layer at the weld m

1. Introduction.During the welding of stainless steel pipes in petrochemical construction, the weld surface and heat-affected zone are prone to oxidation and discoloration. In order to ensure the corrosion resistance of stainless steel, the weld is pickled and passivated after welding to form a dens

In today's wave of industrial development, acid-resistant seamless steel pipes play an indispensable role. This special steel pipe can not only resist the erosion of an acidic environment but also has seamless characteristics, ensuring the stable transportation of pipelines.1. Guarantee of the corro