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Comparison of cold rolling and hot rolling in seamless steel pipe insulation
Seamless steel pipe in pipeline insulation is divided into two types: hot rolled and cold rolled. Hot rolled is divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes; cold Rolling is divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, as well as carbon thin-wall steel pipes, alloy thin-wall steel pipes, stainless thin-wall steel pipes, and special-shaped steel pipes.
Seamless steel pipe pipe insulation may use the following equipment in the production: steel pipe shot blasting machine, three PE winding equipment, 27simnseamless steel pipe, PE pipe black and yellow jacket pipe extraction machine, sandblasting and rust removal equipment, polyurethane low pressure hairpin Anti-corrosion and thermal insulation supporting testing equipment such as machine, foaming platform, glass fiber reinforced plastic winding machine, second PE coating, cement mortar spraying machine, etc.
Seamless steel pipe pipe insulation may have adverse effects on performance in terms of deformation, stability, and fatigue resistance of anti-corrosion steel pipes under the action of external forces. When processing hot-rolled steel products, it is difficult to control the thickness and edge width of the seamless steel pipe. Since at the beginning of thermal expansion and contraction, even if the length and thickness are up to the standard, there will be a certain negative difference after cooling. The wider the negative difference, the thicker the thickness will be more obvious.
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