In the process of making the cold drawn tube, the method for manufacturing the cold drawn tube which can reduce the amount of honing on the inner surface of the cold drawn tube and can effectively reduce the number of cold drawing in use is as follows: the inside of the round steel tube The outer surface is honed, and then, the head is cut, lubricated, cold drawn, straightened, and sheared to obtain a cold drawn tube.
Cold drawn pipe is a complete set of equipment for producing pipes by cold rolling, cold drawing or cold rolling combined with cold drawing. It is a unit for deep processing of hot rolled pipe or welded pipe. The production characteristics of the cold-worked pipe unit are that the pipe material is usually subjected to multiple cold deformations and work hardening from the input to the finished product. Therefore, the whole production process is composed of a plurality of preparation processes and deformation processes, and has the characteristics of reciprocating cycle.
Cold-drawn tubes are also equipped with cold-drawn and cold-rolled mills in the unit to facilitate their respective advantages, especially for the production of high-alloy steel pipes such as stainless steel and non-deformable non-ferrous metal pipes. The cold drawing machine has a single and multiple straight stripper and a reel extubator (see reel extubation). The length of the pipe when the single cold drawing is 50m, and the length of the coil is several hundred meters. Conventional cold-rolled pipe mills are available in two-roll cold-rolled pipe mills and multi-roll cold-rolled mills.
Cold drawn steel pipe is a kind of steel pipe, that is, it is classified according to different production processes, and is different from hot rolled pipe. In the process of expanding the diameter of the capillary tube or the raw material tube, it is formed by multi-pass cold drawing. The cold-rolled steel pipe unit is a complete set of equipment for producing pipes by cold rolling, cold drawing or cold rolling combined with cold drawing, and is a unit for deep processing of hot rolled pipes or welded pipes.