GB/T 20887.7-2017 Translated English of Chinese Standard. (GBT 20887.7-2017, GB/T20887.7-2017, GBT20887.7-2017): Continuously hot rolled high strength steel sheet and strip for automobile - Part 7: Steels for hydraulic forminghttps://www.chinesestandard.net, 2018 M07 21 - 11 pages This Part of GB/T 20887 specifies the terms and definitions, classification and designation, ordering content, dimensions, shapes, weights, technical requirements, test methods, inspection rules, packaging, marking and quality certification of continuously hot rolled high strength steel sheet and strip. This Part applies to steel strip of thickness not greater than 6 mm, and steel sheet transversely cut or steel strip longitudinally cut from steel strip, which are used for the structural parts of automobile such as auxiliary frames and dashboard supports. |
Contents
| 3 | |
Scope | 4 |
Terms and definitions | 6 |
Ordering content | 7 |
Test method | 9 |
Inspection rules | 10 |
Packaging marking and quality certification | 11 |
Common terms and phrases
absorption spectrometric method acid pickled surface aluminium analysis of iron atomic absorption spectrometric atomic emission spectrometric chemical composition coated with oil common level surface content GB/T Continuously hot rolled defective Designations and chemical Determination of multi-element dimensions emission spectrometric method high strength steel hot rolled acid hot rolled high hydraulic forming induction furnace GB/T Infrared absorption method Inspection items Mechanical properties method after combustion Methods for chemical multi-element contents pc/batch GB/T pc/each roll phase steel photometric method quality surface rolled acid pickled rolled high strength sample quantities sampling methods sheet and strip specified in GB/T specified in Table specified minimum tensile spectrophotometric method GB/T steel and alloy Steel and iron steel products steel strip Steels for hydraulic Strain hardening strength steel sheet strip for automobile strips GB/T supplier surface condition surface FB surface quality level Tensile test terms and definitions test methods thickness accuracy tolerances for chemical weight and tolerances