GB/T 21833.1-2020: Translated English of Chinese Standard. (GBT 21833.1-2020, GB/T21833.1-2020, GBT21833.1-2020): Seamless austenitic-ferritic (duplex) stainless steel tubes and pipes - Part 1: Tubes for heat exchanger
https://www.chinesestandard.net, 12 juni 2020 - 19 sidor
This Part of GB/T 21833 specifies the order content, dimensions, shapes, masses, technical requirements, test methods, inspection rules, packing, marking, and quality certification of seamless austenitic-ferritic (duplex) stainless steel tubes and pipes for heat exchanger.
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Dimensions shapes and masses
Packing marking and quality certification
Appendix A Informative Hightemperature mechanical properties of some designations
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agreement By agreement analysis of iron bending calculated according chemical analysis chemical composition content GB/T contract defects Delete delivered according delivery Designation Determination diameter and wall Dimensions document drift-expending edition elongation ferrite fixed length gravimetric method Group hardness heat exchanger Heat treatment system indicated inspection inspection items intergranular corrosion lot GB/T marking mass measured mechanical properties meet the requirements Metallic materials Methods for chemical millimeters minimum wall thickness Modify multiple length negotiation nominal outer diameter nominal wall thickness packing pitting corrosion provisions of GB/T purchaser quality certification Quenching Quenching Quenching removal requirements of Table rules sampling methods Seamless austenitic-ferritic duplex shapes Special requirements specified steel and alloy Steel and iron Steel Pipe strength supplied supplier TAKE 1 sample Technical Tensile test GB/T Test methods test pressure theoretical mass tolerances tubes and pipes tubes are delivered tubes shall comply ultrasonic testing Zhejiang