Changsha Xiangjia Metal Materical Co., Ltd.

  1.       From the perspective of being suitable for offshore oil and gas transportation, it is bound to focus on the construction of LSAW. With the development of oil exploration to the depths of the ocean, due to the impact of pressure, impact and bending forces on the pipeline laying on the seabed, flattening occurs. In order to improve the pipeline transportation capacity and ensure, the submarine pipelines are developing in the direction of thick walls, so the submarine pipelines mostly use LSAW. 2.       Coal slurry and slurry pipelines need to use LSAW. The pipeline transportation of coal and mineral powder in a "paste" state is the effective upward direction. 3.       LSAW are required for machinery, construction, and chemical engineering. The valve seat of the machinery industry manufactures the valve seat. At present, the inner hole is processed by the forging part, which is time-consuming and costly. If the LSAW is used, it is much more economical. In addition, th

    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 GROUP, is one of the leading manufacturers of

  Surface treatment of   SSAW steel pipe : 1. Cleaning. Use solvents and emulsions to clean the surface of SSAW steel pipe to remove oil, grease, dust, smoothing agent and similar organic matter, but it cannot remove the rust, oxide scale, welding flux, etc. on the pipe, so it is only used as an auxiliary method in anti-corrosion. 2. Spray (throw) to remove rust. Generally speaking, shot blasting (sand) rust removal is mainly used for internal and external surface treatment of pipes, and shot blasting (sand) rust removal is mainly used for external surface treatment of pipes. 3. Derusting and pickling. First, use wire brushes and other things to polish the surface of SSAW steel pipe, which can remove loose or warped oxide scale, rust, welding slag, etc.. Although chemical cleaning can make the appearance get a certain degree of cleanliness and roughness, but its anchor lines are shallow and easily pollute the situation. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Divisi

  The preservatives or plating and packaging applied by the steel mills before delivery are important measures to avoid   seamless steel pipe   corrosion. Pay attention to maintenance during transportation and handling, and do not damage them. (1) Before the seamless pipes are put into storage, they should be careful to avoid rain or mixed with impurities. The pipes that have been exposed to rain or contaminated should be cleaned by different methods according to their properties. For example, a wire brush with high hardness can be used and low hardness products should use cloth or cotton etc.; (2) The seamless pipe should be checked frequently after entering the warehouse. If there is rust, the rust layer should be remove in time; (3) After clean the pipe surface, there is no need to apply oil, but for high-quality steel, alloy thin steel plates, thin-walled pipes, alloy steel pipes, etc., the inner and outer surfaces of the steel pipe must be coated with anti-rust oil  after rust rem