Technology and trend of straight seam welded pipe
At this stage, the product quality of the large mouth straight seam welded pipe in the market has good or bad. The large straight seam welded pipe of inferior quality will not only affect the normal application, but also cause damage in the process of application. In this way, the processing technology and basic characteristics of the straight seam welding pipe is what, let me take a look at it
The processing technology of large straight seam welded pipe
Large straight seam steel pipe is made of steel plate rolling, after the realization of rolling to carry out welding process, usually a few steps of welding process, pre-welding, external welding, internal welding. Nondestructive testing should be carried out after welding. Export pipe also carry out beveling, painting treatment, plus pipe cap. According to the needs of users for long and short processing
Large straight seam steel pipe is a kind of oil and gas transmission pipe with large usage and high stability. Large straight seam welded pipe has simple processing technology, high production and processing efficiency, low cost and rapid development.
Biggie straight seam welded pipe refers to the pipe with seam on the surface after the steel strip or steel plate is bent and deformed into round, square and other shapes by welding process. The blank used for Biggie straight seam welded pipe is steel plate or strip steel.
The pipe is a long hollow steel pipe mainly used to convey the product from one position to another position. They are manufactured mainly according to two different types of manufacturing methods, which form welded pipe or seamless pipe.
In the environment with sulfuric acid or hydrochloric acid, the higher the content of Ni in the bigmouth straight seam welded pipe, the stronger the corrosion resistance. Under normal conditions, simply adding Cr to the large straight seam welded pipe can avoid the formation of corrosion.
The poor condition of the edge of the steel strip is another key cause of misopening. Influence of variation of mass flow rate, heat flux and structural technical parameters (ratio Dc/D of spiral curvature diameter and diameter of large diameter straight seam welded pipe) on saturated bubble boiling heat transfer coefficient in vertical spiral pipe.
The tendency of large straight seam welded pipe
Most of the anticorrosive materials used in the new modern device require strong corrosion resistance, such as ion membrane caustic soda device in sodium ions and chloride ions, with ion membrane method or diaphragm method will be separated after it has a strong acid and alkali, the temperature is about 80℃, with ordinary steel and stainless steel materials manufacturing pipeline, it is difficult to resist the corrosion of the medium.
Therefore, a large number of titanium materials are used to replace steel or stainless steel materials to make electrolytic cells, partitions, containers, pipes, pipe fittings and pump valves, which has obtained good use value and economic benefits.
