What is the manufacturing process of high precision cold drawn tube

A high-precision cold-drawn tube is a seamless steel tube with high precision, produced through cold-rolling, cold-drawing, or a combination of the two methods. It boasts exceptional dimensional accuracy and a fine surface finish. Now, let’s delve into the production process of high-precision cold-drawn tubes:

cold drawn seamless tubes
  1. The supply of pipe materials involves the use of several types of pipes, including:
  • Hot-rolled finished pipes
  • Semi-finished pipes
  • Extruded pipes
  • Welded pipes
  1. To prepare the pipe materials for use, various steps must be taken, including:
  • Inspection
  • Bundling
  • Pickling
  • Cleaning
  • Rinsing
  • Neutralization
  • Drying
  • Lubricating
  1. The next step in the process is cold rolling or cold drawing.

  2. The finishing process for the final products includes:

  • Heat treatment
  • Straightening
  • Sampling
  • Cutting the head and tail
  • Inspection
  • Hydraulic testing
  • Oiling
  • Packaging
  • Storage

It should be noted that the finishing process may vary depending on the type of product being produced.

The production of hydraulic cylinders often requires the use of honed tubes, which are commonly made from high-precision cold-drawn steel pipes. These pipes are an excellent metal material choice due to their numerous desirable properties. Honed tubes made from high-precision cold-drawn steel pipes possess high strength, particularly the 4140 honed tubes, rigidity, good wear resistance, and superior performance. Additionally, the inner surface of the tubes is hard, while the outer surface remains tough.

High-precision cold-drawn pipes have diverse applications across several industries, including hydraulic system piping, automobile manufacturing, military industries, construction machinery, railway locomotives, aerospace, ships, injection molding machines, die-casting machines, machine tools, diesel engines, petrochemicals, power plants, and boiler equipment.

Our factory specializes in producing and supplying high-quality, high-precision cold-drawn seamless tubes, pre-honed tubes, and honed tubes. Please feel free to contact our sales team for any inquiries.

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