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　　So what are the differences between and seamless steel pipe? There are mainly the following points: different processing technology: seamless steel pipe is made of high-quality carbon steel or alloy steel. The processing technology of seamless steel pipe is divided into two ways: cold drawing and hot rolling.

　　The difference between seamless steel pipe and slotted pipe is that they are used for different purposes: seamless steel pipe is mainly used for conveying fluid pipes or structural parts, mainly used in machinery industry, while slotted steel pipe is mainly used in construction industry, such as water supply, gas, compressed air and other low-pressure fluids. However, seamless steel pipes are used for pressure pipes.

　　Generally, slotted pipes can withstand a large pressure of less than 20 kg, which is a safe range of use. It is generally used for water, gas, compressed air and other low-pressure fluid;

　　Seamless steel pipe can withstand ultra-high pressure, of course, its wall thickness will also increase, which needs to be designed according to the pressure requirements. It is generally used for high-pressure oil pipes, boiler pipes and other high-temperature and high-pressure equipment. There are also seamless steel pipes for structure, which depends on the design requirements.

　　At present, there are also some seamless pipes, which are annealed to reduce the residual stress of the weld, so that the weld is equivalent to the base metal, and its bearing range is basically equivalent to that of seamless pipe. It can also be considered.

　　Of course, there are some seamless steel pipes on the market, which are drawn or rolled with core after the overall heating of slotted steel pipes. They are mainly of small specifications. This kind of pipe only belongs to seamless steel pipes in terms of appearance, and its quality is not very good. Usage: seamless steel pipe is made of cold drawing and hot drawing, which is generally used for medium pressure equal to or greater than 1.6Mpa. Seamless steel pipe is formed by butt high frequency welding after steel plate forming, which is suitable for medium pressure less than 1.6mp

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