GB/T 24587-2025 (GB/T 24587-2009) PDF EnglishUS$85.00 · In stock · Download in 9 seconds
GB/T 24587-2009: Hot-rolled wire rods for prestressing steel bars of concrete Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 24587: Historical versions
Similar standardsGB/T 24587-2009: Hot-rolled wire rods for prestressing steel bars of concrete---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24587-2009GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.60 H 44 Hot-rolled wire rods for prestressing steel bars of concrete Issued on. OCTOBER 30, 2009 Implemented on. MAY 01, 2010 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Content of Order... 6 4 Dimension, Form, Weight and Permissible Deviations... 6 5 Technical Requirements... 7 6 Test Methods... 8 7 Inspection Rules... 8 8 Package, Marking and Quality Certificate... 9ForewordThis Standard was proposed by China Iron and Steel Association. This Standard shall be under the jurisdiction of Technical Committee on Steel of Standardization Committee of China. Drafting organizations of this Standard. Tianjin Iron and Steel Co., Ltd., Tianjin Yinlong Prestressing Steel Products Group Co., Ltd., Tangshan Iron and Steel Co., Ltd., Xingtai Iron & Steel Corp., Ltd., China Metallurgical Information and Standardization Institute. Main drafters of this Standard. Wu Bo, Gong Wenxu, Zhao Yuxiu, Yu Jingqi, Xie Zhiqin, Deng Cuiqing, Sun Xiaoling, Han Weiqi, Wang Lingjun, Dai Shifeng. Hot-rolled wire rods for prestressing steel bars of concrete1 ScopeThis Standard specifies the content of order, dimension, form, weight and permissible deviations, technical requirements, test methods, inspection rules, package, marking and quality certificates etc. for hot-rolled wire rods for prestressing steel bars of concrete. This Standard applies to hot-rolled wire rods for prestressing steel bars of concrete.2 Normative referencesThe articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this Standard. For the undated documents so quoted, the latest editions shall be applicable to this Standard. GB/T 222 Permissible tolerances for chemical composition of steel products GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.11 Iron steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method (GB/T 223.11-2008, ISO 4937.1986, MOD) GB/T 223.12 Methods for chemical analysis of iron, steel and alloy - The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content3 Content of OrderContracts or orders signed in accordance with this Standard shall include.4 Dimension, Form, Weight and Permissible Deviations4.1 The dimension, form, weight and permissible deviations of wire rods shall comply with GB/T 14981. 4.2 Any special requirements for the dimension, form and weight of wire rods shall be mutually agreed upon between the seller and the buyer, and indicated in the contract.5 Technical Requirements5.1 Designation and Chemical Composition 5.2 Smelting Process Steel for wire rod shall be smelted in oxygen converters or electric furnaces. 5.3 Condition of Delivery Wire rods shall be delivered as hot rolled. 5.4 Mechanical Properties According to the requirements of the buyer, wire rods can be subject to mechanical performance tests; the test items and performance index shall be agreed upon between the seller and the buyer. 5.5 Decarburized Layer If required by the buyer and indicated in the contract, wire rods can take a decarburized depth test. The total decarburized layer at one side of the wire rod (ferrite + transition layer) is divided into two groups as shown in Table 2.D in the table is the nominal diameter of wire rods. The group shall be indicated in the contract. If not, it will be regarded as group II. 5.6 Surface Quality 5.7 Special Requirements Based on the buyer’s needs and agreed on between the seller and the buyer, tests of microstructures, non-metallic inclusions, etc. can be carried out, with the test indexes determined through consultation between both parties, and indicated in the contract.6 Test Methods6.1 The chemical composition of steel can be tested through common methods; when arbitration, it shall be conducted according to GB/T 223.7 Inspection Rules7.1 Inspection and Acceptance The quality inspection and acceptance of wire rods shall be carried out by the seller’s technical supervision department. The buyer is entitled to carry out inspection and acceptance according to this Standard. 7.3 Re-inspection and Decision Rules The re-inspection and decision rules of wire rods shall be in accordance with GB/T 2101.8 Package, Marking and Quality CertificateThe package, marking and quality certificate of wire rods shall comply with GB/T 2101. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
