Changsha Xiangjia Metal Materical Co., Ltd.

  When storing   LSAW steel pipes , some methods are used to increase the stability of the steel pipes, so what should be done? Here, we'll talk about it in detail. 1. When storing LSAW steel pipes, pay attention to ensuring the upper and lower pads. The second is to ensure a ventilation space to avoid reactions during storage; some metal products that should be more careful in storage; 2. It is necessary to choose a suitable environment, like a warehouse. If not, the drainage should be unblocked, and the environment should be clean, and there should be no harmful gases or other dust in the air to avoid affecting the straight seam steel pipe; 3. Different types and specifications of straight seam steel pipes should be stored separately to avoid confusion. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grade...

    The base material of  LSAW  is a single controlled-rolled steel sheet isotropic, which can be 100% non-destructive testing. The stress state of LSAW is good after forming. Due to the mechanical expansion, the internal stress can be eliminated and the geometric accuracy of the steel pipe can be improved. The internal quality of LSAW is good. Because welding is performed on a flat surface, welding conditions, automatic tracking, and non-destructive testing are easy to carry out, which results in low weld height and high accuracy of internal and external welds.   LSAW has a wide range of wall thickness, generally 6-25 mm, and the thickness can reach 45 mm.   LSAW has good bending and flattening resistance. LSAW welds are 60% shorter than spiral welded pipes, and the probability of weld defects is low.    Longitudinal seam welded pipe (LSAW) has high reliability.   Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GR...

  LSAW steel pipe  is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. Generally divided into metric electric welded steel pipes, electric welded thin-walled pipes, transformer cooling oil pipes, etc. Welded pipes with larger pipe diameters can be produced with narrower billets, and welded pipes with different pipe diameters can be produced under the same billet width, but are comparable Compared with long straight seam pipes, the weld length is increased by 30% and 100% respectively, and the production speed is lower. Next, I want to introduce how to measure the length of a straight seam steel pipe. According to the different processes of the manufacturer, the length of LSAW steel pipe measurement system has a various of measurement methods, are following types: 1. The basic principle of measuring the length of the grating ruler is: two fixed-length grating rulers are set on the outer side of the LSAW steel pipe, the grating rulers at ...

We know that the quality of the welded seam determines the quality of the  LSAW steel pipe . Once the porosity of the LSAW steel pipe, it will not only affect the tightness of the welded pipe, cause leaks in the pipe, but also become an induced point of corrosion. Reduce weld strength and toughness.  In general, moisture, dirt, scale and iron filings in the flux, welding composition and thickness, surface quality of the steel plate, treatment of the steel plate side plate, welding process and steel pipe forming process, etc. may be the cause of the porosity of the weld. Therefore, during welding, if the welding temperature is high, the weld seam will be over-burned to form a perforation. When it contains the appropriate amount of CaF2 and SiO2, it will react and absorb a large amount of H2, generating HF with high stability and insolubility in liquid metal. Prevent the formation of hydrogen holes; the forming factor of the weld is too small, the shape of the weld is na...