What is cold rolled tube?
Cold drawn steel pipe is a kind of steel pipe, also called cold rolled pipe, that is, it is a type classified according to different production processes, which is different from hot rolled pipe. In the process of expanding the diameter of the capillary tube or the raw material tube, it is made by cold drawing in multiple passes, usually on a single-chain or double-chain cold-drawing machine of 0.5 to 100T. Cold-rolled steel pipes are 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, machined pipes, thick-walled pipes, small-caliber plus die-drawn cold-drawn pipes, and other steel pipes. Carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless thin-walled steel pipe, special-shaped steel pipe. The cold-drawn steel pipe can have an outer diameter of 6mm, a wall thickness of 0.25mm, and a thin-walled tube of 5mm in diameter. The wall thickness is less than 0.25mm. The accuracy and surface quality are significantly better than those of hot-rolled pipes. Both the caliber and the length are restricted.