Aperture welded pipe, also known as small caliber welded pipe, is made of steel plate or strip welded after crimping forming.Small caliber welded pipe has simple production technology, high production efficiency, more varieties and specifications, less equipment, but its general strength is lower than seamless steel pipe.Since the 1930s, with the rapid development of continuous rolling production of high quality strip steel and the progress of welding and inspection technology, the quality of welding seam has been continuously improved, its varieties and specifications are increasing day by day, and it has replaced seamless steel pipe in more and more fields.Welded steel pipe can be divided into straight seam welded pipe and spiral welded pipe according to the form of weld.

The blank used for small caliber welded pipe is steel plate or strip steel, which is divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc welding pipe due to different welding technology.It can be divided into straight seam welded pipe and spiral welded pipe because of the different welding forms.Because its end shape is divided into circular welded pipe and special-shaped (square, flat, etc.) welded pipe.Small caliber welded pipe production technology is simple, high production efficiency, low cost, rapid development.Spiral welded pipe generally has higher strength than straight welded pipe. Welded pipe with larger pipe caliber can be produced from narrow blank, and welded pipe with different pipe caliber can also be produced from blank of the same width.However, compared with the same length of straight seam pipe, the weld length increases by 30~100%, and the production speed is lower.Therefore, small caliber welded pipe mostly adopts straight seam welding, while large caliber welded pipe mostly adopts spiral welding.

Jinjiang City Changjiang steel Tube Industry Co., LTD. Specializes in the production and sales of small caliber welded pipe, Seamless pipe, spiral pipe and shelf pipe, welcome to inquire: 86-0595-82151777