Tianjin steel pipe development prospect in 2020

In the global steel pipe market, Tianjin steel tube has accounted for a large proportion. Every year, a number of customers around the world come to Tianjin for their desired steel products. Tianjin steel pipe play a significant role in the development of modern times today.

For a long time, Tianjin steel tube manufacturers by virtue of its very good reputation and high quality, stand out from other competitors in the global market. In order to meet customers’ requirements for low costs, steel pipe manufacturers in China try to carry out “dimensional accuracy improvements” that is aimed at the “elimination of cold-drawing” as well as the “workability improvements” that is aimed at the “elimination of heat treatment” in steel pipe manufacturing. In general, one of the causes for reduced dimensional accuracy is due to the deformation of the end of a pipe occurring with pipe circumferential forces and residual stress distribution during the production process. Especially in the recent years, Tianjin steel pipe manufacturers are committed to development new advanced technology in achieving improvements involving in low-strain pipe manufacturing, minimizing forming strain during the manufacturing process as well as workability in 2020. In future, it is believed that a seam-forming strain in a positive way will become even more important than technologies for the mere formation of shapes.

For structural steel pipes, the efficiency of production in small lots has to be enhanced in the current steel pipe market. It is necessary to promote the use of cage rolls as a size-independent technology in the production process, or the application of flexible forming mills to medium diameter pipes. Besides, it is essential to manufacture products suited for the use in specific environments, and even to improve the technology applied to adding various working at low costs. As a result of the reduced manufacturing costs and improved quality, it is hoped that seam-welded steel pipes will enter the market for high-strength, high-grade pipes, in which seamless steel pipe have been predominant in the market.

Today, welded steel pipe has been widely used in pipeline projects for a long history. Medium-diameter seam-welded steel pipes are mostly used as line pipes in many large projects in the world. The most important target in the seam-welded steel pipe manufacturing process in relation to the line pipe and oil well pipe market is to ensure a welding quality that is capable of competing with seamless steel pipe in the market and also to establish a corrosion-resistant high-alloy steel pipe manufacturing technology in 2020. In addition, it will be necessary to establish atmospheric control technology in addition to the current method of heat input constant welding control, and also to develop a combined welding method based on present ERW in the current steel pipe market.