In addition to the good mechanical and technological properties of large diameter steel saw pipe as structural material, it also has the excellent characteristics of using stainless steel corrosion environment, maintaining fine appearance, acid and alkali resistance, high stainless steel pipe temperature resistance, low temperature resistance, excellent magnetic properties, wear resistance and other functions. Stainless steel pipes and other metal materials have been widely used in construction projects. They also have the following characteristics.


1) Longitudinal large diameter has high specific strength and stiffness. Specific strength and stiffness of structural engineering have two basic parameters in material selection. Strength is the ratio of strength to weight. The heat treatment strength of 52 different types of stainless steel tubes with high strength may be between 46 and 152 under different conditions, while the commonly used aluminum alloy is 48, copper alloy 17, zinc alloy 16.9. Specific stiffness modulus E ratio and high strength steel material ratio are 25.5, ferritic stainless steel 25.6, austenitic stainless steel 25.3, aluminum alloy 25.5, copper alloy 12.1, 14.1 zinc alloy, stainless steel pipeline also shows the ideal material of "light material" structure.


2) Good high temperature strength and low temperature toughness. Compared with ordinary carbon steel, the large diameter longitudinal welded pipeline with high temperature performance is much better, so it has better fireproof performance. Ordinary carbon steel loses its load-bearing function around 400 C. Stainless steel pipe can withstand high temperature 700 C before structural damage. It is reported that it encounters 9/11. American aircraft crashed and crashed skyscrapers due to a large number of aviation gasoline burning and the temperature is too high, resulting in the structural work of load-bearing steel. Stainless steel pipes have good impact toughness, especially at low temperature, which is much better than ordinary carbon steel. It can ensure the durability and safety of building structures. When steel structures are subjected to external forces (such as collision, earthquake, etc.) and bend, the structural strength of stainless steel pipes becomes very high. Stainless steel pipe manufacturer


3) Good processing performance. Longitudinal plastic with large caliber, good ductility, strong forming ability, easy to form, is made of thin-walled structure, and can be strengthened at the same time. When the structural parts appear in the forming process, it is more important to ensure their overall performance.


4) The service life of stainless steel pipe is long. According to the use of the environment, the engineering structure made by using stainless steel pipe reasonably has long service life and little or no maintenance function. From the analysis of life cycle cost of building, ordinary steel needs to be repaired or replaced every 25 years. Large diameter longitudinal welded pipe is a century-old machine. Compared with the life cycle of various building materials, the cost of stainless steel pipe is the lowest. LOCAL VARIATION OF DIAMETER LONGITUDINAL COMPONENTS