GB/T 24587-2009 English PDF (GBT24587-2009)

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GB/T 24587-2009: Hot-rolled wire rods for prestressing steel bars of concrete
GB/T 24587-2009
GB
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 Contents
Foreword ... 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 ... 9 
Foreword
This 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 and 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 concrete
1 Scope
This 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 references
The 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 content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy - The sodium
thiosulfate separation iodimetric method for the determination of copper content
GB/T 223.19 Methods for chemical analysis of iron steel and alloy - The
neocuproine-chloroform extraction photometric method for the determination of copper
content
GB/T 223.23 Iron steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method (GB/T 223.23-2008, ISO 4939.1984,
MOD)
GB 223.53 Methods for chemical analysis of iron, steel and alloy - The flame atomic
absorption spectrophotometric method for the determination of copper content
GB/T 223.54 Methods for chemical analysis of iron, steel and alloy - The flame atomic
absorption spectrophotometric method for the determination of nickel content
GB/T 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium
arsenite-sodium nitrite titrimetric method for the determination of manganese content
GB/T 223.59 Iron steel and alloy - Determination of phosphorus content - Bismuth
phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate
blue spectrophotometric method
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric
acid dehydration gravimetric method for the determination of silicon content
GB/T 223.61 Methods for chemical analysis of iron, steel and alloy - The ammonium
phosphomolybdate volumetric method for the determination of phosphorus content
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate
extraction photometric method for the determination of phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium
(potassium) periodate photometric method for the determination of manganese content
GB/T 223.64 Iron steel and alloyed - Determination of manganese content - Flame
atomic absorption spectrometric method
GB/T 223.67 Iron steel and alloy - Determination of sulfur content -Methylene blue
spectrophotometric method (GB/T 223.67-2008, ISO 10701.1994, IDT)
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium
iodate titration method after combustion in the pipe furnace for the determination of
sulfur content
GB/T 223.69 Iron steel and alloy - Determination of carbon contents - Gas-volumetric
method after combustion in the pipe furnace (GB/T 223.69-2008, JISG 1211.1986,
MOD)
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The gravimetric
method after combustion in the pipe furnace for the determination of carbon content
GB 224 Determination of depth of decarburization of steel (GB 224-1987, eqv ISO
3887-1976)
GB/T 228 Metallic materials - Tensile testing at ambient temperature (GB/T 228-2002,
eqv ISO 6892.1998)
GB/T 2101 General requirements of acceptance, packaging, marking, and certification
for section steel
GB/T 4336 Standard test method for spark discharge atomic emission spectrometric
analysis of carbon and low-alloy steel (routine method)
GB/T 10561-2005 Steel-Determination of content of nonmetallic inclusions -
Micrographic method using standards diagrams (GB/T 10561-2005, ISO 4967.1998,
IDT)
GB/T 13298 Metal - Inspection method of microstructure
GB/T 14981 Dimensions, shape, mass and tolerances for hot-rolled wire rods
GB/T 20066 Steel and iron-Sampling and preparation of samples for the determination
of chemical composition (GB/T 20066-2006, ISO 14284.1996, IDT)
3 Content of Order
Contracts or orders signed in accordance with this Standard shall include.
a) Number of standard;
b) Name of product;
c) Grades;
d) Specifications;
e) Grade of dimension accuracy;
f) Weight (or quantity);
g) Condition of delivery;
h) Other special requirements.
4 Dimension, Form, Weight and Permissible Deviations
4.1 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.