First of all, the cold-drawn steel pipe uses a good tube blank and the process is good.
The cold-drawn steel pipe extrusion method is to put the heated tube bad in a closed extrusion cylinder, and the perforating rod moves with the extrusion rod to extrude the extruded part from a smaller die hole. This method can produce steel pipes with smaller diameters.
General-purpose seamless pipes are made of ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, with a large output, and are mainly used as pipes or structural parts for conveying fluids. According to the purpose, cold-drawn pipes are divided into three categories:
1. Supply according to chemical composition and mechanical properties;
2. Supply according to mechanical properties;
3. Supply according to water pressure test. Steel pipes supplied according to the first two types, if used to withstand liquid pressure, must also be subjected to water pressure tests. 
Basic requirements for cleaning cold-drawn steel pipes:
1. Wear labor protection supplies before pickling cold-drawn steel pipes. The on-site working environment must also be inspected in detail, mainly to check whether the slings of the steel pipe are intact, and the operation can only be carried out after confirmation
Second, when pickling, hydrochloric acid is mainly used for pickling, and the content of hydrochloric acid is generally 18% to 20%.
Before operation, the staff also needs to understand the concentration and temperature of the acid and the tonnage of the acid cold-drawn steel pipe in this tank. These can be detected by using measuring equipment.
Cherry
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Email: Cherry@jinyoumetal.com
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