At present, there are more and more types of straight seam steel pipes. With the rapid development of continuous strip rolling production and the advancement of welding and inspection technology, the weld seams continue to improve, the varieties and specifications of welded steel pipes are increasin

Thick-walled spiral steel pipe is a method of arc welding under the flux layer, which is formed by using the heat generated by the arc burning between the flux and the welding wire under the flux layer, the base metal, and the molten wire flux.During use, the principal stress direction of the thick-

With the wide application of stainless steel pipes, people's requirements for them are getting higher and higher, and the processing technology has become diversified. Pickling is one of the processing techniques. Do you know why hydrogen embrittlement occurs in stainless steel pipes after pickling?

High-pressure boiler steel pipe: mainly used to manufacture high-quality carbon structural steel, alloy structural steel, and stainless heat-resistant steel seamless steel pipe for steam boiler pipes with high pressure and above pressure. These boiler pipes work under high temperatures and high pres

Steel is a non-combustible building material that is resistant to earthquakes and bending. In practical applications, steel can not only increase the load capacity of buildings relatively, but also meet the needs of architectural design aesthetics, and avoid the defects of concrete and other buildin

ASTM A335 P11 seamless steel pipe, seamless ferritic alloy steel pipe for high temperature, used for the heating surface of the high-pressure boiler, economizer, header, superheater, reheater, petrochemical industry pipe, etc. It belongs to the category of seamless steel pipes. The manufacturing met

Welded steel pipe slag inclusions are slag that remains inside the weld. From a theoretical analysis, the main reasons for the slag inclusion in the submerged arc automatic welding seam are as follows: ①There are many inclusions in the raw materials (including base metal, welding wire, and flux); ②T

To protect power and communication cables laid in railways, highways, subways, municipal construction, and other system fields, when the cables pass through obstacles such as railways, highways, and rivers, cable protection tubes are generally added to the pipelines. At present, the cable protection

1. 3PE anti-corrosion steel pipe has high sealing performance, and long-term operation can greatly save energy, reduce costs and protect the environment.2. Strong corrosion resistance, simple and fast structure, and service life can reach 30-50 years.3. At low temperatures, PE has good corrosion res

At present, there are two standards for 3PE anti-corrosion steel pipes, namely GB/T 23257-2009 and GB/T 23257-2017. GB/T 23257-2017 is a new standard, implemented in December 2017. The two standards differ mainly in the following ways:3PE anti-corrosion steel pipe1. The design temperature of the ant