how to select HSAW carbon steel pipe

HSAW pipe is the acronym of spiral submerged arc welded pipe (SSAW welded pipe), which is a kind of carbon steel pipe. HSAW carbon steel pipe is made from hot rolled strip steel and bending formed on the basis of spiral and automatic submerged arc welding carrying out in the seam and out seam. So it is also called spiral seam steel pipe.

HSAW Carbon Steel Pipe


As for the following reasons, it is usually used in the large diameter steel pipe production:
1) Change the shape angle, you can use the same width strip production various calibres steel pipe;
2) It is a continuous bending; the length of steel pipe length is unlimited;
3) Weld spiral-shaped uniform distribution on the circumference of the entire steel pipe, steel pipe size, high precision, high intensity;
4) It is easy to change the size suitable for small quantities of steel pipe production of many varieties.
The length of spiral welded seam tube is L/cos(8). Through long time debating, the spiral straight seam pipe is superior to the UOE steel pipe in particular. Spiral pipe manufacturing technology is advanced in the world in recent years. Therefore, we should keep progressive pace to purse much more excellent welding technology so as to keep advantaged competitiveness.

First, due to defects of weld parallel, the spiral pipe is as oblique defects. In the using process, the principal stress direction of steel pipe and pipe axis is smaller than the straight seam pipe in the equivalent length. Secondly, since the pipeline steel is rolled plate, impacted toughness large anisotropy is along with the rolling direction. And the CVN value is three times higher than the rolling direction. Straight seam pipe is suffered the main stress from the precise perpendicular to the direction of the lowest pipe impact resistance. While the spiral is staggered in the direction of the pipe impact resistance so than the disadvantage of spiral welded pipe is changed into advantages.

Submerged arc welding (SAW) is an important welding method. Because of advantages in inherent high quality welding, high productivity welding, without arc and dust, SAW has been an important welding way to steel structure manufacturing like pressure vessel, pipeline section and box beams etc. Specializing in HSAW carbon steel pipe, Ourway steel guarantees the quality and after-sale services. Meanwhile, we adopt advanced SAW technology to meet different requirements for customers. We are looking forward to hearing from you, welcome to send us e-mail or browse our websites.