Yongding Engineering Machinery
What is the production process of cold-drawn seamless pipe
Mar 21,2025
Cold rolled and cold drawn seamless pipe are two kinds of seamless pipe production process, also can be used cold rolled, cold drawn, cold drawn, cold rolled mixed production. The use of cold-drawn process has the advantages of simple equipment, less investment, easy operation and maintenance. However, the disadvantage is that the intermediate process is more, low rate of finished products. The use of cold rolling process equipment is more complex, more investment, but can reduce the intermediate processes, improve the rate of finished products, seamless steel tube product size, tube surface accuracy is very high, especially suitable for high-precision seamless steel tubes and very thin-walled precision seamless steel tube production.
Due to the limitation of the number of mill roll holes and cost, the finished product specifications can not be too much; cold rolling and cold drawing of the finished product produced by the joint production process, with a good quality of steel pipe, processing cycle time is short, reduce the intermediate degreasing, heat treatment, shrinkage, straightening and other processes, energy saving, reduce metal consumption, less raw material specifications and other advantages.
Cold drawn steel pipe billet pickling can be used mixed acid, hydrofluoric acid, etc.. Carbon structural steel pipe billet and alloy structural seamless steel pipe billet is appropriate to use ** pickling, high-quality carbon structural steel pipe and high-quality alloy structural steel precision seamless pipe billet is appropriate to use pickling, high alloy seamless steel pipe containing chromium, Cr and nickel Ni higher is appropriate to use a mixture of nitric acid pickling, austenitic stainless steel pipe is appropriate to use hydrofluoric acid pickling.
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