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The national standards for welded pipes may vary in different countries and regions, but usually cover regulations on the size, material, manufacturing process, performance requirements, and other aspects of welded pipes. Here is an overview of some national standards for welded pipes:
1、 Chinese National Standards
In China, the national standards for welded pipes are mainly issued by the State Administration for Market Regulation and the National Standardization Administration. Common national standards for welded pipes include:
GB/T 3094-2012 "Cold drawn special-shaped steel pipes": applicable to the size, shape, weight, and allowable deviation of cold drawn special-shaped steel pipes.
GB/T 13793-2008 "Straight seam welded steel pipes": specifies the dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of straight seam welded steel pipes.
GB/T 21835-2008 "Dimensions and Weight per Unit Length of Welded Steel Pipes": specifies the nominal dimensions, outer diameter, wall thickness, weight per unit length, and allowable dimensional deviations of welded steel pipes.
In addition, there are other national standards for welded pipes specifically designed for various purposes, such as fluid transportation, structural use, low-pressure fluid transportation, and other types of welded pipes.
2、 International standards
Internationally, the standards for welded pipes are usually developed by the International Organization for Standardization (ISO) or other relevant international standard organizations. For example:
ISO 3183 "Steel pipes for pipeline transportation systems in the petroleum and natural gas industries": applicable to steel pipes used in pipeline transportation systems in the petroleum and natural gas industries, including straight seam submerged arc welded steel pipes and high-frequency resistance welded steel pipes.
EN 10305 "Precision Steel Pipes": specifies the dimensions, tolerances, delivery technical requirements, etc. of precision steel pipes, and is applicable to steel pipes that require high precision and good surface quality.
ASTM A53 "Seamless and Welded Steel Pipe" is a standard developed by the American Society for Testing and Materials (ASTM) for seamless and welded carbon steel pipes used for low-pressure fluid transport, structural applications, and more.
3、 Other national standards
In addition to Chinese and international standards, other countries also have their own national standards for welded pipes. For example:
The Russian National Standard (ГОスТ) includes various standards for welded pipes, suitable for different purposes of steel pipes.
German DIN standards: The German Industrial Standards (DIN) also include relevant standards for welded pipes, such as DIN EN 10217-1 "Technical delivery conditions for welded steel pipes for pressure purposes".
Japanese JIS standards: The Japanese Industrial Standards (JIS) have established various standards for welded pipes, such as JIS G3444 "Carbon Steel Pipes for General Construction".
