GB/T 18248 is the national standard for seamless steel pipes for gas cylinders. Its production methods mainly include hot rolling, cold drawing and thermal expansion. During the production process, the chemical composition, dimensional accuracy, surface quality and other indicators of the steel pipe need to be strictly controlled to ensure that the performance and quality of the steel pipe meet the requirements of the GB/T 18248 standard. At the same time, various inspections and tests are also required, such as tensile tests, impact tests, hydraulic tests, etc., to ensure the quality and reliability of steel pipes.
GB/T 18248 is the national standard for seamless steel pipes for gas cylinders. Its characteristics are mainly reflected in the following aspects:
1. Strict chemical composition requirements: GB/T 18248 has strict requirements for the chemical composition of seamless steel pipes for gas cylinders to ensure that the steel pipes have sufficient strength, toughness and corrosion resistance. These chemical components include the content of carbon, silicon, manganese, phosphorus, sulfur and other elements, as well as the content of alloying elements such as chromium, molybdenum, etc.
2. High-precision dimensional control: GB/T 18248 specifies the dimensional accuracy and tolerance range of seamless steel pipes for gas cylinders. This ensures that the steel pipes can be accurately matched and assembled when manufacturing the gas cylinder, ensuring the sealing and safety of the gas cylinder.
3. Good mechanical properties: GB/T 18248 has good mechanical properties, including tensile strength, yield strength, elongation, etc. These properties ensure that the steel pipe can maintain stable shape and performance when withstanding the pressure inside the cylinder.
4. Excellent welding performance: In order to meet the welding requirements during the manufacturing process of gas cylinders, GB/T 18248 has good welding performance. Good welding performance of steel pipes can ensure that defects such as cracks and slag inclusions will not occur during the welding process, ensuring the manufacturing quality of gas cylinders.
5. Strict inspection and testing requirements: GB/T 18248 stipulates the inspection and testing requirements for seamless steel pipes for gas cylinders, including chemical composition analysis, mechanical property testing, hydraulic pressure testing, etc. These inspections and tests can ensure that the quality and performance of steel pipes meet standard requirements and ensure the safe use of gas cylinders.
GB/T 18248 is the national standard for seamless steel pipes for gas cylinders. Its application range is very wide, mainly including but not limited to the following fields: Oil and gas industry: During the extraction, transportation and storage of oil and gas, gas cylinders It is one of the indispensable equipment. Used to manufacture oil and natural gas cylinders to ensure their safety and reliability in high-pressure and highly corrosive environments.
Chemical industry: In the chemical production process, gas cylinders are used to store and transport various chemical substances. Environmental protection field: In the field of environmental protection, gas cylinders are used to store and transport various gases, such as compressed air, nitrogen, etc. Firefighting field: Firefighting gas cylinders are an important part of firefighting equipment and are used to store and provide fire-extinguishing gases. Automobile manufacturing industry: In the automobile manufacturing industry, gas cylinders are used to store and provide fuel gas, such as cylinders for CNG (compressed natural gas) vehicles.
