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Technical requirements for cold-drawn seamless steel pipes
Cold-drawn seamless steel pipe technology plays an important role in the steel industry. It is a key process for manufacturing high-quality steel pipes. Cold-drawn seamless steel pipes have excellent mechanical properties and high-precision dimensions and are widely used in petroleum, chemical, m...Read more -
Preliminary treatment and use of straight seam steel pipes
Preliminary treatment of straight seam steel pipes: nondestructive testing inside welds. Since the pipe is a super-large steel pipe in the water supply project, especially the steel pipe with a thickness of t=30mm is used as a pipe bridge. It must withstand both the internal water pressure and th...Read more -
Deviation and forming method of large-diameter steel pipes in production
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 vari...Read more -
Introduction to the quality process and characteristics of large-diameter flanges
Large-diameter flanges are one type of flanges, which are widely used and promoted in the machinery industry and have 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...Read more -
Common defects in the welding area of spiral seam submerged arc welding steel pipe
Defects that are prone to occur in the submerged arc welding area include pores, thermal cracks, and undercuts. 1. Bubbles. Bubbles mostly occur in the center of the weld. The main reason is that hydrogen is still hidden in the welded metal in the form of bubbles. Therefore, the measures to elimi...Read more -
Application fields of large-diameter plastic-coated steel pipes
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 cos...Read more