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Differences between hot-rolled seamless steel pipes and cold-rolled seamless steel pipes
From the processing technology: hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrystallization temperature; From the appearance: the surface of cold-rolled seamless steel p...Read more -
Geometric characteristics of large-diameter steel pipe sections
(1) Its node connection is suitable for direct welding, without node plates or other connectors, which saves both labor and materials. (2) When necessary, concrete can be poured inside the pipe to form a composite component. (3) The geometric characteristics of the pipe section are good. The pipe...Read more -
Process flow of steel elbows commonly used in industrial projects
Seamless steel elbow: Steel elbow is a kind of pipe fitting used at the end of the pipeline. It accounts for about 80% of all the pipe fittings used in the pipeline system. Usually, different forming processes are selected for steel elbows of different materials or wall thicknesses. Common seamle...Read more -
Welding process of thick-walled steel pipes
First, the welding method of thick-walled steel pipes When welding thick-walled steel pipes, first clean the oil, paint, water, rust, etc. on the weld, then make a groove according to the wall thickness, thicker, larger, thinner (angle grinder), and then the gap between the products, generally 1-...Read more -
Safety protection in the construction of anti-corrosion steel pipes in industrial projects
At present, the more commonly used steel pipes are anti-corrosion steel pipes. There are mainly 3PE anti-corrosion steel pipes, TEPE anti-corrosion steel pipes, epoxy resin anti-corrosion steel pipes, etc. So, what should be paid attention to during the construction of anti-corrosion steel pipes?...Read more -
Common defects and causes of steel pipes
First, inner surface defects 1. Internal fold Features: Straight or spiral, semi-spiral serrated defects appear on the inner surface of the steel pipe. Causes: 1) Tube billet: loose center, segregation; serious shrinkage hole residue; non-metallic inclusions exceed the standard. 2) Uneven heating...Read more