Carbon Steel GB/T 9125.1-2020 Fasteners for steel pipe flange joints-Hexagon head bolts
Product Overview:
Fasteners for steel pipe flange joints-Hexagon head bolts is a key component of connecting steel pipe flanges. It is made of high strength material, high dimensional accuracy and reliable thread quality. After special anti-corrosion treatment, can adapt to a variety of harsh environment. It is widely used in petrochemical industry, building water supply and drainage, heat supply and other fields to ensure the safe and stable operation of pipeline system. Its strict standards provide a strong guarantee for engineering quality and are an important choice for achieving reliable pipe flange connections.
Grade:
4.8, 6.8, 8.8, 10.9, 12.9
Carbon Steel GB/T 9125.1-2020 Fasteners for steel pipe flange joints-Hexagon head bolts Details
Bolt thread specifications range from M10 to M33, with a pitch varying from 1.5mm to 3.5mm. Processing accuracy and surface quality should be strictly controlled in the manufacturing process, and high-quality steel that meets the standards should be used as raw materials. The heat treatment process includes quenching, tempering, etc., to ensure that the fasteners obtain the required mechanical properties and corrosion resistance.
Product Characteristics
Application
Product Characteristics
- High precision specification: The hexagon head bolts specified in GB/T 9125.1-2020 have strict requirements on dimensional accuracy. The tolerance range of parameters such as head size, screw length and diameter is small, which can ensure a tight fit when connecting with the steel pipe flange and effectively prevent the connection loosening or leakage problems caused by dimensional deviation.
- High strength material: Generally made of high quality materials such as high strength alloy steel. These materials have high tensile strength and yield strength, so that the bolts can maintain stable connection performance when subjected to the pressure, temperature changes and external loads of the pipeline system, and will not easily deformation or fracture.
- Good corrosion resistance: Some products have special surface treatment, such as galvanized, nickel plating and other anti-corrosion treatment processes. This enables bolts to resist corrosion in humid, corrosive environments (such as chemical piping systems), prolonging their service life and ensuring the long-term reliability of the entire pipe flange connection.
- Reliable thread quality: The machining precision of the thread is high, the tooth profile Angle is accurate, and the pitch is uniform. This ensures the smoothness and tightness of the bolt and nut during the screwing process, effectively transfers torque, achieves a solid connection, and maintains good thread performance after multiple disassembly and installation.
Application
- Industrial piping system: Widely used in petroleum, chemical, natural gas and other industries of pipeline transportation system. In these areas, the pipeline needs to withstand high temperature, high pressure and a variety of corrosive media, the standard hexagonal head bolt can be reliably connected to the steel pipe flange, to ensure the safe operation of the pipeline, to prevent media leakage, to ensure the continuity and safety of the production process.
- Building water and drainage system: In the water supply and drainage pipes of buildings, especially for the complex water supply and drainage networks of some large buildings or high-rise buildings, the use of this standard bolt can ensure the tightness and stability of the pipe flange connection, effectively cope with the water flow pressure and possible vibration in the pipeline, and reduce the occurrence of water leakage and other failures.
- Heat supply system: Heat pipelines face changes in temperature and pressure when transporting hot water or steam. The bolt can be used to connect the flange of the heat pipe to ensure the firmness of the connection during the process of thermal expansion and cold contraction, maintain the normal operation of the heat supply system, and avoid the heat loss and safety risks caused by the loosening of the connection.
