Cold-drawn seamless steel pipe

Production specification: Outer diameter of steel pipe 12-377 Steel pipe wall thickness of 2-50 Product introduction: In order to obtain smaller size and better quality small-diameter seamless steel pipes, it is necessary to use cold rolling, cold drawing or a combination of both methods. Cold rolling is usually carried out on a two-high mill, in which steel pipe is rolled in an annular pass consisting of a circular groove of variable section and a stationary conical head. Cold drawing is usually carried out in 0.5 ~ 100T single chain or double chain cold drawing machine. High-quality carbon structural steel cold-drawn seamless pipe, mainly made of No. 10, No. 20, No. 35, No. 45 steel, in addition to ensure chemical composition and mechanical properties to do hydraulic test, flange, flaring, flattening and other tests. Calculation formula for weight of cold-drawn seamless steel pipe :(OD - wall thickness)* Wall thickness *0.02466=kg/ m (weight per meter) Cold drawing material: 10#, 20#, 35#, 45#, q345b, 40cr, 42crmo, 35crmo, 30crmo and other materials

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