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Pipe Making Machine Steel Pipe Industry
Jul 27, 2017

Pipe Making Machine Steel pipe industry

According to the current development of the Chinese market situation, in the near future will be much more large-scale processing plants, so the application of welded pipe units will be more and more, in order to make the development of welded pipe equipment to be better Know the square tube machine roll manufacturers partners, we have to talk about in detail below.

To analyze the market situation of welded pipe unit, first of all from the Chinese steel pipe industry to analyze, China's domestic steel pipe industry has been nearly a decade or so the rapid development and growth, from 2010 onwards, China's domestic steel industry in 2010 has been Occupied more than 50 percent of the world market, of which more than 45 percent of welded steel pipe, according to this point of view, China is now a large steel production. From this aspect to analyze the future development of the market and industry of welded pipe units, it has been easy to see that China is in some ways already a large producer of welded pipe units, and now the state is sustained and rapid growth, according to relevant statistics The survey concluded that the steel industry reached the level of tens of millions of tons, but in the long run, in the next few years, the global economy will remain at a relatively slow pace of growth, so the average level of economic slow down at the same time , The price of welded pipe units will become more and more normal.

Through the above things consumers can clearly know the square tube in the market above the future trend, so that consumers in the future when the product will not have to worry about what will happen, consumers can rest assured that the use.

  Stainless steel tube is a hollow long circular steel, mainly used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial pipelines and mechanical structural components. Also, in the bend. Tensile strength of the same, the lighter weight, it is also widely used in the manufacture of pipe machine parts and engineering structure. Also used for the production of various weapons, barrels, shells and so on.

1, concentricity

The manufacturing process of the seamless pipe punches a hole in the stainless steel billet at a temperature of 2200 ° f. At this high temperature, the tool steel is formed from the air by the pressing and drawing of the soft and spiral. So that the wall thickness of the pipe is not uniform and the eccentricity is high. Thus astm allows the wall thickness of the seamless welded pipe to be greater than the wall thickness of the welded pipe. The slit tubes are made of precise cold-rolled plates (4-5 feet per roll width), which typically have a maximum wall thickness difference of 0.002 inches and the steel plate is cut to a width of πd, where d is outside the pipe path. The tolerances of the wall thickness are small and the wall thickness of the entire circumference is very uniform.

2, welding performance

Generally there are some differences in the chemical composition of the seam and the seamless pipe. Production of seamless steel composition is only the basic requirements to achieve astm. And the production of sewn steel is included in the welding process to produce a heat transfer is easy to weld, the entire weld penetration. The lack of the above chemical composition of the pipe, such as seamless pipe, in the welding process will produce a variety of unstable factors, not easy to weld and welding thoroughly.