Welded special - shaped tubes are a common type of pipe materials, and are often used in fields such as construction, machinery, and electric power. In order to ensure the quality and performance of welded special - shaped tubes, certain standards need to be adhered to. The following are some common welded special - shaped tube standards.
- GB/T 3094 - 2012 "Cold - drawn Welded Special - shaped Steel Tubes"
This standard stipulates the requirements for the classification, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of cold - drawn welded special - shaped steel tubes. Among them, the technical requirements include chemical composition, mechanical properties, surface quality, bending test, impact test, etc.
- YB/T 5209 - 2005 "Welded Special - shaped Steel Tubes"
This standard stipulates the requirements for the classification, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of welded special - shaped steel tubes. Among them, the technical requirements include chemical composition, mechanical properties, surface quality, bending test, impact test, etc.
- GB/T 6728 - 2002 "Cold - formed Welded Rectangular Steel Tubes"
This standard stipulates the requirements for the classification, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of cold - formed welded rectangular steel tubes. Among them, the technical requirements include chemical composition, mechanical properties, surface quality, bending test, impact test, etc.
- GB/T 13793 - 2008 "Long - Seam Steel Tubes"
This standard stipulates the requirements for the classification, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of long - seam steel tubes. Among them, the technical requirements include chemical composition, mechanical properties, surface quality, bending test, impact test, etc.
- GB/T 6725 - 2008 "Cold - formed Welded Steel Tubes"
This standard stipulates the requirements for the classification, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of cold - formed welded steel tubes. Among them, the technical requirements include chemical composition, mechanical properties, surface quality, bending test, impact test, etc.
In conclusion, the welded special - shaped tube standards are an important guarantee for ensuring product quality and performance. Both manufacturers and users should strictly comply with relevant standards. Meanwhile, for standard - setters, it is also necessary to continuously improve and update the standards to adapt to the ever - changing market demands and technological development.
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