Cold- draw Steel Pipe Production Process

The cold- draw steel pipe production process:

The cold-draw steel pipe production process involves combining cold-rolled and cold-draw

processes in the production process. The advantage of cold-rolled uses simple equipment, has a low cost, and easy operation and maintenance, but has many working procedures and produces low yield. Using cold-draw process requires more complex equipment and more investment, but has a simple procedure and high yield. Especially for high-precision seamless steel tubes and thin-walled seamless tubes.

Due to the limited count and cost of a rolling mill, the finished product specification is less. The product produced with cold-rolled and cold-draw have many advantages: high quality, short processing cycle time, reduced intermediate degreasing, heat treatment, faint, favoring straight processes, saves energy, reduces metal consumption, has less raw material specifications and so on.

For tube pickling can use sulfuric acid, hydrochloric acid, mixed acid, hydrofluoric acid. Carbon structural steel and alloy seamless steel pipe better to use sulfuric acid, high-quality carbon structural steel and alloy steel precision seamless suitably hydrochloric acid, high chromium Cr and Ni Ni high-alloy seamless steel pipe preferably sulfuric acid, hydrochloric acid, nitric acid and mixed acid wash, austenitic stainless steel tube is appropriate to hydrofluoric acid.