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 exchangerhttps://www.chinesestandard.net, 12 juin 2020 - 19 pages 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. |
Table des matières
3 | |
Scope | 5 |
Order content | 7 |
Dimensions shapes and masses | 8 |
Technical requirements | 10 |
Test methods | 16 |
Inspection rules | 17 |
Packing marking and quality certification | 18 |
Appendix A Informative Hightemperature mechanical properties of some designations | 19 |
Expressions et termes fréquents
according to formula agreement By agreement analysis of iron austenite calculated according chemical analysis composition of steel contract corrosion TAKE delivered according Designation and chemical diameter and nominal diameter and wall drift-expending edition FeCl3 ferric chloride ferrite fixed length gravimetric method heat exchanger Heat treatment system hydrostatic pressure test Infrared absorption method inspection items intergranular corrosion items of steel Jiangsu lot GB/T megapascals Metallic materials method after combustion Methods for chemical millimeters minimum wall thickness Modulus of elasticity molybdenum multiple length negotiation nominal outer diameter nominal wall thickness pitting corrosion provisions of GB/T purchaser quality certification Quenching Quenching Quenching requirements of Table sampling methods Sampling quantities Seamless austenitic-ferritic duplex Smelting method spectrophotometric method GB/T stainless steel tubes steel and alloy Steel and iron supplier TAKE 1 sample Tensile strength test GB/T test pressure theoretical mass Titration tubes and pipes tubes are delivered tubes shall comply ultrasonic testing Zhejiang