GB/T 21530-2008Galvanized steel wire for cotton packing (English PDF)
棉花打包用镀锌钢丝
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 9, 2008
Implementation date
May 1, 2008
Scope
GB/T 21530-2008 is the English-translated version of 棉花打包用镀锌钢丝.
This standard sets the classification, shape, geometry and weight of galvanized steel wire for cotton packing, together with its technical requirements, test methods, inspection rules, packaging, labeling, transportation and storage.
Clause 1 applies it to galvanized steel wire for cotton packing, which the text calls galvanized steel wire for short.
Clause 3 classifies the wire by tensile strength into two categories: class A, low carbon, which conforms to GB/T 701 and has a tensile strength of 400 MPa to 510 MPa, and class B, high carbon, which conforms to GB/T 4354 and has a tensile strength of 1400 MPa to 1650 MPa.
The same clause splits the wire again by the way it is galvanized into two kinds, which the draft renders as hot dip galvanized steel wire and galvanized steel wire, and gives the marking pattern with two worked examples: a class A wire of 2.8 mm diameter is marked bale wire RZ-A-2.8, and a class B wire of 3.4 mm diameter is marked bale wire DZ-B-3.4.
Clause 4, on shape, geometry and weight, begins by requiring a circular cross-section, and the draft breaks off there. Clause 2 cites GB/T 228, GB/T 238, GB/T 701, GB/T 2972, GB/T 2973, GB/T 2976 and GB/T 4354.
The standard was proposed by the China Federation of Supply and Marketing Cooperatives and falls to its Standardization Technical Committee for the cotton processing industry.
The foreword states that this is the first release of the standard; it was issued on April 9, 2008 and has applied since May 1, 2008.
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Document preview — GB/T 21530-2008
National Standard of the People's Republic of China
- ICS
- 65.060.99
- Classification
- B 93
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Category
- 4 The shape, geometry, weight
Foreword
The standard proposed by China Federation of Supply and Marketing Cooperatives.
The standard by the China Federation of Supply and Marketing Cooperatives Standardization Technical Committee of cotton processing industry.
1 Scope
This standard specifies the cotton packing with galvanized steel wire (hereinafter referred to as galvanized steel wire) classification, shape, geometry, weight, and technology to Requirements, test methods, inspection rules, packaging, labeling, transportation and storage.
This standard applies to cotton packing with galvanized steel wire.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 228 metal materials at room temperature tensile test method
GB/T 238 metal wire repeated bending test method for materials
GB/T 701 low carbon steel hot rods
GB/T 2972 Zinc Coating Copper Sulfate Test Method
GB/T 2973 Zinc Coating quality test methods
GB/T 2976 Standard Test Method for winding a metal wire material
GB/T 4354 quality carbon steel hot rod
3 Category
According to the tensile strength of steel wire 3.1 is divided into two categories.
Class A (low carbon) in line with the provisions of GB/T 701, the tensile strength of 400MPa ~ 510MPa.
Class B (high carbon) in line with the provisions of GB/T 4354, and a tensile strength of 1400MPa ~ 1650MPa.
3.2 Model
Galvanized steel wire galvanized by divided into two. one for hot dip galvanized steel wire, one for galvanized steel wire.
Example 1. Diameter 2.8mm, tensile strength Class A galvanized steel wire, which is marked as. bale wire RZ-A-2.8.
Example 2. Diameter 3.4mm, tensile strength galvanized steel wire Class B, marked as. bale wire DZ-B-3.4.
4 The shape, geometry, weight
4.1 Shape
Galvanized steel wire cross-section shape is circular.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 238Metallic materials -- Wire -- Reverse bend test
- GB/T 701Hot rolled low carbon steel wire rods
- GB/T 2972Test method for uniformity of zinc coating on zinc-coated steel wire by the copper sulphate dip
- GB/T 2976Metallic materials. Wire. Wrapping test
- GB/T 4354Hot-rolled quality carbon steel wire rods
GB/T 228 · GB/T 2973
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Related Standards
GB/T 228.1-2021 — Metallic Materials — Tensile Testing — Part 1: Method of Test at Room Temperature
GB/T 228.2-2015 — Metallic materials -- Tensile testing -- Part 2: Method of test at elevated temperature
GB/T 228.3-2019 — Metallic materials -- Tensile testing -- Part 3: Method of test at low temperature
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