Seamless steel pipe according to the use of different, thick wall seamless steel pipe and thin wall seamless steel pipe. Seamless steel pipes are widely used.
1, general purpose seamless steel pipe according to the material, rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel. For example, seamless pipes made of low carbon steel such as No. 10 and No. 20 are mainly used as transportation pipelines for steam, gas, liquefied gas, natural gas, various petroleum products and various other gases or liquids; 45, 40Cr and other medium carbon steel seamless pipe, mainly used to manufacture a variety of machine accessories and pipe accessories.
2. Seamless steel pipes for general use are also supplied according to chemical composition and mechanical properties, and are supplied according to hydraulic test. Seamless steel pipes subjected to fluid pressure should be guaranteed to pass the hydraulic pressure test.
3, special purpose seamless pipe for boiler, geological exploration, bearing, acid resistance and so on. Such as petroleum geological drilling pipe, petrochemical cracking pipe, boiler pipe, bearing pipe and automobile, tractor, aviation high-precision structural steel pipe.
Structure with seamless steel pipe, mainly used in general structure and mechanical structure. Its representative material (grade) :carbon steel 20, 45 steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
Seamless steel pipe for conveying fluid, mainly used for conveying fluid pipes on engineering and large equipment. The representative material (grade) is 20, Q345, etc.
Low and medium pressure boiler with seamless steel pipe, mainly used in industrial boilers and domestic boilers to transport low and medium pressure fluid pipeline. The material is 10, 20 steel.
High pressure boiler with seamless steel pipe, mainly used in power station and nuclear power plant boiler on high temperature, high pressure transfer fluid header and pipeline. The material is 20G, 12Cr1MoVG, 15CrMoG, etc.
Marine carbon steel and carbon manganese steel seamless steel pipe, mainly used for Marine boiler and superheater I, II pressure tubes. The representative material is 360, 410, 460 steel grade, etc.
High pressure fertilizer equipment for seamless steel pipe, mainly used in fertilizer equipment to transport high temperature and high pressure fluid pipeline. The material is 20, 16Mn, 12CrMo, 12Cr2Mo, etc.
Seamless steel pipe for petroleum cracking, mainly used in boilers, heat exchangers and fluid transport pipelines of petroleum smelters. Its representative material is 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on
Gas cylinder with seamless steel pipe, mainly used in the production of various gas, hydraulic gas cylinders. Its representative material is 37Mn, 34Mn2V, 35CrMo and so on.
Hydraulic support with hot-rolled seamless steel pipe, mainly used in the production of coal mine hydraulic support and cylinder, column, and other hydraulic cylinder, column. Its representative material is 20, 45, 27SiMn, etc.
High pressure seamless steel pipe for diesel engine, mainly used in diesel injection system high pressure tubing. Its steel pipe is generally cold-drawn pipe, and its representative material is 20A.
Cold-drawn or cold-rolled precision seamless steel pipe, mainly used for mechanical structure, carbon pressure equipment, requiring high dimensional precision, good surface finish steel pipe. Its representative material 20, 45 steel and so on.
Cold-drawn seamless steel pipe shaped steel pipe, mainly used for the production of various structural parts and parts, its material is high-quality carbon structural steel and low alloy structural steel.
Precision inner diameter seamless steel pipes for hydraulic and pneumatic cylinders are mainly used to make cold-drawn or cold-rolled seamless steel pipes with precision inner diameter for hydraulic and pneumatic cylinders. Its representative material is 20, 45 steel and so on.
Stainless steel seamless steel pipe for boilers and heat exchangers, mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes and so on in chemical enterprises. With high temperature, high pressure, corrosion resistant steel pipe. Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
Stainless steel seamless steel pipe for construction). It is mainly used for general structure (hotel, hotel decoration) and mechanical structure of chemical enterprises with atmospheric resistance, acid corrosion and a certain strength steel pipe. Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.
Stainless steel seamless steel pipe for fluid transportation, mainly used for conveying corrosive media pipelines. The representative material is 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti, etc.
Automobile axle sleeve pipe seamless steel pipe, mainly used in the production of automobile axle sleeve pipe and drive axle housing shaft pipe high-quality carbon structural steel and alloy structural steel hot rolled seamless steel pipe. Its representative material is 45, 45Mn2, 40Cr, 20CrNi3A and so on.