Comparison of the heat treatment method of seamless steel pipe between complete annealing and incomplete annealing

The quality requirements of anti-corrosion spiral steel pipes are very important in the production process, because it will be related to the safe use of anti-corrosion spiral steel pipes in the later stage. After the production of anti-corrosion spiral steel pipes is completed, its quality needs to be strictly tested.

Understanding seamless pipes, we first need to understand the mechanical properties of this pipe material. The mechanical properties of seamless pipes are very stable, so they can be widely used.

The following are four methods of spiral steel pipe surface derusting treatment:Cleaning, Spray rust removal, Derusting tools, and Pickling.

At present, the proportion of oil and gas transported by longitudinally welded pipes in the world is increasing, accounting for about 75%-95% of the total oil and gas. At present, the scope of transportation is gradually expanding, not only petroleum and natural gas, but also various chemical industries.

The forming methods for manufacturing large-diameter LSA steel pipes include UOE forming method, roll forming method (CFE), CE forming and so on. For most of the forming methods, the last process is to perform a full-length expansion of the welded tube blank to improve the quality of the welded tube.