High-precision cold-drawn tube, cold-rolled steel pipe Unit is a cold-rolling, cold-drawn or cold-drawn combined with the cooling process of the production of a complete set of pipe equipment, is the hot-rolled pipe or welded pipe in depth processing unit. According to the metal processing performance, pipe size, quality requirements and investment and benefits to choose different processing methods and corresponding auxiliary procedures. The basic process of cold-drawn pipe is: pipe material supply, the pipe material used for hot-rolled finished pipe or semi-finished pipe, extruded pipe and welded pipe, pipe material preparation, including inspection, bundling, pickling, cleaning, flushing, neutralization, drying, coating lubricants, etc. cold processing (hot-rolled or cold-drawn); (4) finished product finishing including heat treatment, straightening, sampling, Cutting tail, inspection (manual inspection and various testing), hydraulic test, oil, packaging, warehousing and so on.
Different product finishing content varies.
Cold processing pipe unit production characteristics is the pipe material from input to processing into the finished product usually through a number of cold deformation and processing hardening, thus the entire production process by a plurality of preparation process and deformation process, and has the characteristics of reciprocating cycle, so many processes, long production cycle, metal consumption is large, production efficiency is low, the general production scale is small. At the same time, the cold drawing and cold rolling machine in the unit is beneficial to their respective advantages, especially for the production of stainless steel and other high alloy steel pipe and difficult to deform non-ferrous metal pipe more reasonable and necessary. The cold drawing machine has Sangen straight strip pipe-pulling machine and the reel Pipe-pulling machine (see Reel to draw the pipe). A single cold-drawn pipe length of up to 50m, the drum when the tube up to hundreds of meters. The minimum tonnage of the cold drawing machine is 30kN and the maximum is 7000kN. Conventional cold-rolled pipe machine has two-roll cold-rolling pipe machine and multi-roll cold-rolled pipe machine two kinds.