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What are the heat treatments of stainless steel welded pipes
During the production process of stainless steel welded pipe, intermediate heat treatment and finished heat treatment can be carried out. Because a bright surface without oxidation can be obtained, the traditional pickling process is canceled. The use of this heat treatment pr...Read more -
Comparison of advantages and disadvantages of spiral steel pipe and straight seam steel pipe
The weld seam of the spiral steel pipe is longer than that of the straight seam steel pipe. If the pipe length is L, the weld seam length is L/cos(θ). However, most of the defects of steel pipes are concentrated in the weld seam and the heat-affected zone. The long weld seam m...Read more -
What is the suitable temperature for welding straight seam steel pipe
Welding, also known as welding, is a manufacturing process and technology that can join metal or other thermoplastic composite materials such as plastics by applying heat, high temperature, or pressure. There are three welding methods: 1. Welding. The workpiece is heated to fo...Read more -
Is there any difference between HFW steel pipe and ERW steel pipe
The difference between ERW steel pipe (straight seam electric resistance welded steel pipe) and HFW steel pipe (high frequency welded steel pipe) is mainly the principle. As the name implies, resistance welding is a method in which pressure is applied through electrodes after ...Read more -
Several common anti-corrosion processes for spiral steel pipe anticorrosion
Anti-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 that the spiral steel p...Read more -
Classification and application range of welded steel pipe
Welded pipe, also known as welded steel pipe, is a steel pipe made of steel plate or strip steel after crimping and welding. Welded steel pipe has a simple production process, high production efficiency, many varieties and specifications, and less equipment investment, but its...Read more -
Thick-wall straight seam steel pipe production process and content of inspection standards
Thick-walled straight seam steel pipe is a steel pipe made by rolling the long steel strip of the specification into a round pipe through a high-frequency welding unit and welding the straight seam. The shape of the steel pipe can be round, square or irregular, depending on th...Read more -
Several common defects and effects of straight seam steel pipes
1. How does the gnawing of straight seam steel pipe happen? What is the effect on welded pipes? The gnawing edge of the straight seam steel pipe usually occurs on the slitting strip coil. The gnawing edge of the straight seam steel pipe is a jagged appearance at the edge of th...Read more -
Stages and standard parameters of mechanical expansion process for large diameter steel pipes
The stages of the mechanical expansion process of large-diameter steel pipes: The steel plate is first pressed into a U shape in the forming die, and then pressed into an O shape, and then internal and external submerged arc welding is performed. After welding, the diameter is...Read more