Welded steel pipe, short for welded pipe, is made of rolled steel or steel strip, which is formed by unit and die. Welded steel pipe has simple production process, high production efficiency, many varieties and specifications and few equipment, but its strength is generally lower than that of seamless steel pipe. Since 1930s, with the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technology, the weld quality has been continuously improved, and the varieties and specifications of welded steel pipes have been increasing. Seamless steel pipes have been replaced in more and more fields, especially in heat exchange standby pipes, decorative pipes and medium and low pressure fluid pipes.

Characteristics of welded pipe

1. On-line continuous production of small-diameter stainless steel welded pipes. The thicker the wall thickness, the greater the investment of the unit and welding equipment, and the less economical and practical it is. The thinner the wall thickness, the lower the input-output ratio. Secondly, the technology of this product determines its advantages and disadvantages. Generally, the welded steel pipe has high precision, uniform wall thickness and high brightness inside and outside the pipe (the surface brightness of the steel pipe is determined by the surface grade of the steel plate), and can be cut at any length. Therefore, it is economical and beautiful in the application of high-precision, medium and low-pressure fluids.

Stainless steel seamless steel pipe is a kind of strip steel with hollow section and no seam around it. It is a kind of steel pipe resistant to weak corrosive media such as air, steam and water and chemical corrosive media such as acid, alkali and salt. Also known as stainless acid-resistant steel pipe.

Features of seamless pipe:

First, the thicker the wall thickness of this product, the more economical and practical it will be. The thinner the wall thickness, the higher the processing cost.

Second, the process of this product determines its limited performance. Generally, the precision of seamless steel pipe is low: the wall thickness is uneven, the brightness inside and outside the pipe is low, the length cost is high, and pits and black spots inside and outside the pipe are not easy to remove;

Third, its detection and shaping must be done off-line. Therefore, it shows its advantages in high pressure, high strength and mechanical structure materials.

I hope the above answers are helpful to you!