Product Information
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Four quality inspections of stainless steel elbow welding
1. Appearance inspection: Generally, it is mainly observed with the naked eye, sometimes with a magnifying glass 5-20 times. Through visual inspection, surface defects of welded stainless steel elbow welds can be found, such as undercuts, welding tumors, surface cracks, pores,...Read more -
Alloy steel pipe details
The performance of alloy steel pipe is much higher than that of ordinary seamless steel pipe. (1) Raw materials are strip steel coils, welding wires, and fluxes. Before putting into use, they must go through strict physical and chemical tests. (2) The head-to-tail butt joint o...Read more -
Causes and preventive measures of single side undercut of submerged arc welded steel pipe
In the production process of submerged arc welded steel pipes, especially in high-speed welding, the undercut has become the main defect in the production process of spiral submerged arc welded steel pipes. The defect of undercut mainly has the following surface forms: single-...Read more -
Classification and application range of welded steel pipes
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 -
Anti-corrosion method of buried steel pipe
The anti-corrosion of the steel pipe is based on the requirements of the drawings, and the epoxy coal tar pitch paint is used to wrap the glass cloth, and the top coat is used for anti-corrosion. Outer wall construction process: pipe rust removal → primer → top coat → second t...Read more -
What are the quality requirements for steel pipe pickling
(1) After pickling, the corrosion and oil stains on the inner wall of the steel pipe are all removed, and the cleanliness should meet the requirements of relevant standards. (2) Pickling parts must not be pickled. If the steel pipe is immersed in the pickling solution for too ...Read more -
Straight seam steel pipe classification and welded steel pipe use guide
Straight seam steel pipe refers to a welded steel pipe with one weld in the longitudinal direction of the pipe body. GB/9711.1 stipulates that when the diameter is greater than 914.4, the straight seam steel pipe can have two straight welds, and the angle between the welds is ...Read more -
Anti-corrosion process of anti-corrosion steel pipes
In recent years, the demand for steel pipe insulation in various industries in China has increased. The production technology of domestic steel pipe anti-corrosion factories has been relatively mature, and various anti-corrosion products can be produced. Among them, 3PE anti-c...Read more -
Technical requirements for steel bending pipes and analysis of factors affecting the quality of steel bending pipes
Steel bending pipes are produced step by step, and then made into finished products. In the whole production process, because the pipes are required to be curved, and the bending of the pipes requires some technology, the degree of bending is also different. Then What are the ...Read more