GB/T 4354-2025 PDF English
US$305.00 · In stock · Download in 9 secondsGB/T 4354-2025: Hot-rolled quality carbon steel wire rods Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 4354: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 4354-2025 | English | 305 |
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Hot-rolled quality carbon steel wire rods
| Valid |
| GB/T 4354-2008 | English | 70 |
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Hot rolled quality carbon steel wire rods
| Valid |
| GB/T 4354-1994 | English | 199 |
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Hot-rolled quality carbon steel wire rods
| Obsolete |
| GB 4354-1984 | English | 199 |
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Quality carbon steel wire rods
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 4354-2025 PDF Preview: GB/T 4354-2008
GB/T 4354-2025: Hot-rolled quality carbon steel wire rods---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/GBT4354-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
CCS H 44
Replacing GB/T 4354-2008, GB/T 33165-2016
Hot-rolled quality carbon steel wire rods
Issued on. MARCH 28, 2025
Implemented on. OCTOBER 01, 2025
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 8
4 Order content... 8
5 Manufacturing process... 8
6 Technical requirements... 8
7 Test methods... 11
8 Inspection rules... 12
9 Packaging, marking and quality certification... 12
Appendix A (Normative) Quantitative analysis method of centre segregation for high
carbon wire rod... 13
Appendix B (Informative) Working curve setting example... 18
1 Scope
This document specifies the order content, manufacturing process, technical
requirements, test methods, inspection rules, packaging, marking and quality certificate
of hot-rolled quality carbon steel wire rods.
This document applies to hot-rolled quality carbon steel wire rods with a nominal
diameter of 5 mm ~ 52 mm (hereinafter referred to as "wire rods").
2 Normative references
The following documents are referred to in the text in such a way that some or all of
their content constitutes requirements of this document. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document.
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 223.4, Alloyed steel - Determination of manganese content - Potentiometric
or visual titration method
GB/T 223.5, Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method
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
3 Terms and definitions
No terms and definitions need to be defined in this document.
4 Order content
The contract for placing an order based on this document shall include the following.
5 Manufacturing process
5.1 Smelting method
Steel is smelted in a converter or an electric arc furnace, and can be refined outside the
furnace if necessary.
5.2 Delivery state
Wire rods are delivered in hot rolled state.
6 Technical requirements
6.1 Designation and chemical composition
6.1.1 The steel designation and chemical composition (melting analysis) shall comply
with the requirements of GB/T 699.
6.2 Decarburized layer
Wire rods of 30 steel and above shall be inspected for the depth of decarburized layer,
and the total decarburized layer (ferrite + transition layer) depth on one side of the wire
rod shall comply with the requirements of Table 1.If not specified, Group II shall apply.
6.3 Micro structure
6.3.1 The metallographic structure of wire rods of 65 steel and above is mainly sorbite
structure. The sorbite content shall comply with the requirements of Table 2.Special
requirements may be stated in the contract.
6.3.2 Wire rods of 65 steel and above are required to be tested for grain boundary
cementite and central martensite and shall comply with the requirements of Table 3.
6.4 Center segregation
6.4.1 Based on the requirements of the buyer and upon agreement between the supplier
and the buyer, wire rods of 60 steel and above may be subjected to the central carbon
segregation test. There shall be no central carbon segregation of grade 3 or above.
6.5 Mechanical properties
Wire rods shall be tested for tensile properties and provided with tensile strength and
area reduction results. Specific requirements for mechanical properties can also be
specified through consultation between the supplier and the buyer. Table 4 shows the
reference range of mechanical properties of typical designations.
6.7 Size, shape, weight
6.7.1 The size, shape and allowable deviation of the wire rod shall comply with the
requirements of Grade B accuracy in GB/T 14981-2009.
6.8 Special requirements.
Based on the requirements of the buyer and upon agreement between the supplier and
the buyer, bending test, forging test, torsion test and inspections of grain size, non-
metallic inclusions, metallographic structure, etc. can be carried out. The indicators
shall be stipulated by the agreement between the supplier and the buyer and shall be
indicated in the contract.
7 Test methods
7.1 The sampling quantity, sampling method and test method of each batch of wire rod
inspection items shall comply with the requirements of Table 5.
7.2 Chemical analysis shall be carried out in accordance with GB/T 223.3, GB/T 223.4,
GB/T 223.5, GB/T 223.12, GB/T 223.19, GB/T 223.23, GB/T 223.58, GB/T 223.59,
GB/T 223.60, GB/T 223.61, GB/T 223.62, GB/T 223.63, GB/T 223.64, GB/T 223.68,
GB/T 223.69, GB/T 223.71, GB/T 223.72, GB/T 223.85, GB/T 223.86, or other general
methods such as GB/T 4336, GB/T 20066 and GB/T 20123.
8 Inspection rules
8.1 Inspection and acceptance
The quality inspection and acceptance of wire rods shall be carried out by the supplier's
technical quality supervision department.
8.2 Batch rules
Wire rods shall be inspected and accepted in batches, and each batch shall consist of
wire rods of the same designation, same furnace number and same specification.
9 Packaging, marking and quality certification
The packaging, marking and quality certificate of wire rods shall comply with the
provisions of GB/T 2101.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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