GB/T 1499.2-2018: Translated English of Chinese Standard. (GBT 1499.2-2018, GB/T1499.2-2018, GBT1499.2-2018): Steel for the reinforcement of concrete - Part 2: Hot rolled ribbed bars
https://www.chinesestandard.net, 21 июл. 2018 г. - Всего страниц: 31
This Part of GB/T 1499 specifies the terms and definitions, classification, grade, order content, dimension, shape, weight and tolerance, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of hot rolled ribbed bars for the reinforcement of concrete. This Part applies to hot rolled ribbed bars and hot rolled ribbed bars of fine grains for the reinforcement of concrete. This Part does not apply to re-rolled bars and residual heat-treated bars rolled from finished steel.
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Annex A informative Calculation formula for specific projected rib area of bars
analysis of iron Arabic numerals axis bars GB/T bars shall comply Characteristic value inspection chemical analysis chemical composition chromium Composed of HRB content GB/T crescent ribbed bars cross-section Vickers hardness Cut from different delivery inspection demand party different piece coil end of transverse factory name ferrite grain size Hebei hot rolled bars hot rolled ribbed induction furnace inner diameter Inspection item Iron & Steel Jiangsu length longitudinal ribs macroscopic metallography martensite mechanical properties Methods for chemical microstructure millimeters nominal cross-sectional area nominal diameter pearlite projected rib area reinforcement of concrete reverse bending test ribs of bars rolled ribbed bars sampling quantity shown in Figure specific projected rib specifications of GB/T specifications of Table specimen’s cross-section spectrophotometric method GB/T steel and alloy Steel and iron Steel Group Steel Group Co supply party surface Tensile test methods theoretical weight Vickers hardness test Wang weight deviation weight of bars yield strength