Steel Tube Factory Announces Knowledge of Cold Rolled Seamless Pipe (GB3639-2000)
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Steel Tube Factory Announced Cold-rolled Seamless Pipe (GB3639-2000) Knowledge Cold-rolled seamless pipe (GB3639-2000) is a cold-drawn or cold-rolled precision seamless steel pipe used for mechanical structures, high dimensional accuracy of hydraulic equipment, and good surface finish. . Cold-rolled (dial) seamless pipes include carbon steel thin-walled steel pipes, alloy thin-wall steel pipes, general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, oil cracking pipes, and other steel pipes. Stainless steel pipe, special-shaped steel pipe. Hot-rolled seamless pipe outer diameter is generally greater than 32mm, wall thickness 2.5-75mm, cold-rolled seamless steel pipe diameter can be up to 6mm, wall thickness can be to 0.25mm, thin-walled pipe outer diameter can be 5mm, wall thickness is less than 0.25mm, Cold rolling has higher dimensional accuracy than hot rolling.