GB/T 20492-2019 English PDF

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GB/T 20492-2019: Zinc-5% aluminum-mixed mischmetal alloy-coated steel wire and steel wire strand
Status: Valid

GB/T 20492: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20492-2019	439	Add to Cart	4 days	Zinc-5% aluminum-mixed mischmetal alloy-coated steel wire and steel wire strand	Valid
GB/T 20492-2006	639	Add to Cart	3 days	Zinc-5% aluminum-mischmetal alloy-coated steel core wire for aluminum conductors steel reinforced	Obsolete

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Basic data

Standard ID: GB/T 20492-2019 (GB/T20492-2019)
Description (Translated English): Zinc-5% aluminum-mixed mischmetal alloy-coated steel wire and steel wire strand
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H49
Classification of International Standard: 77.140.65
Word Count Estimation: 22,271
Date of Issue: 2019-03-25
Date of Implementation: 2020-02-01
Older Standard (superseded by this standard): GB/T 20492-2006
Quoted Standard: GB/T 228.1; GB/T 239.1; GB/T 701; GB/T 1839; GB/T 2103; GB/T 2104; GB/T 2972; GB/T 2976; GB/T 4354; GB/T 8358; GB/T 21839; GB/T 24242.2; YB/T 081; YB/T 5357; YS/T 310
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the classification, order content, technical requirements, test methods, inspection rules, packaging, marking and Quality certificate. This standard is applicable to the steel wire used in the manufacture of overhead stranded wires, as well as the steel grained wire used for overhead power ground wires, communication cables, hangers, suspensions, tie-downs and fixed objects. This alloy coating product is suitable for working occasions that require corrosion resistance and tensile force.

GB/T 20492-2019: Zinc-5% aluminum-mixed mischmetal alloy-coated steel wire and steel wire strand

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Zinc-5% aluminum-mixed mischmetal alloy-coated steel wireand steel wire strand ICS 77.140.65 H49 National Standards of People's Republic of China Replace GB/T 20492-2006 Zinc-5% aluminum-mixed rare earth alloy coated steel wire and steel strand Published on.2019-03-25 2020-02-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 20492-2006 "Zinc-5% aluminum-mixed rare earth alloy coated steel wire, steel strand", and GB/T 20492- Compared with.2006, the main technical changes are as follows. --- Removed the mechanical properties of galvanized steel wire at various levels under the C-grade coating of steel wire (see Table 4 to Table 8, Table 4 of the.2006 edition); --- Removed the weight of the C grade coating in the steel coating (see Table 2, Table 5 of the.2006 edition); --- Removed the weight of the D grade coating in the steel wire coating for steel strands (see Table 16, Table 13 of the.2006 edition); --- Increased the minimum breaking tensile test method for steel strands. by testing the sum of the breaking tension of the stranded steel wire in the strand Calculate the minimum breaking force of the strand (see 15.10); --- Added 4 grade strength and 5 grade strength galvanized steel wire, and specified its performance parameters (see Table 7 and Table 8); ---Modified the winding test mandrel diameter of the 3-stage strength galvanized steel wire with the nominal diameter in the range of 2.75mm~5.50mm 5D changed to 4D (see Table 6, Table 4 of the.2006 edition); --- Revised the strength code in the "Modeling Method for Galvanized Steel Wire Product Types for Overhead Stranded Wires", using "Class 1, Class 2, Class 3, Class 4 and Level 5" (see Table 4 to Table 8, Table 4 of the.2006 edition); ---Order content, test methods, packaging, signs, quality certificates have been detailed in accordance with China's national conditions (see Chapter 4, Chapter 8, Chapter 11, Chapter 15, Chapter 18). This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This standard was drafted. Tianjin Metallurgical Steel Wire and Cable Group Co., Ltd., Tianjin Gaierfa Metal Products Co., Ltd., Jinrui Ganyuantong Letter Equipment Technology Co., Ltd., Hebei Hongxiang Telecommunications Equipment Co., Ltd., Metallurgical Industry Information Standards Institute. The main drafters of this standard. Zhang Jianguo, Yan Qiaoling, Ren Cuiying, Wang Zhiyong, Wang Lingjun, Gao Lihui, Wang Jun, Gu Shuchi, Ma Yongde, Wang Qi, Cao Beibei, Liu Wei, Leng Mingjian. The previous versions of the standards replaced by this standard are. ---GB/T 20492-2006. Zinc-5% aluminum-mixed rare earth alloy coated steel wire and steel strand

1 Scope

This standard specifies the zinc-5% aluminum-mixed rare earth alloy coated steel wire (hereinafter referred to as steel wire), steel strand (hereinafter referred to as steel strand) Class, order content, technical requirements, test methods, inspection rules, packaging, marking and quality certificates. This standard is applicable to the manufacture of steel wire for overhead stranded wire; suitable for overhead power ground wire, communication cable, hanger, suspension, tethering and fixed objects Steel strands used. The alloy coating product is suitable for applications requiring corrosion resistance and tensile strength. Note. The technical specifications of steel wire are specified in Chapters 3 to 9 of this standard. The technical specifications of steel strands are specified in Chapters 10 to 16.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 228.1 tensile testing of metallic materials - Part 1 GB/T 239.1 Metallic materials and wires - Part 1 GB/T 701 low carbon steel hot rolled strip GB/T 1839 steel product galvanized layer quality test method General provisions of GB/T 2103 wire inspection, packaging, marking and quality certificate GB/T 2104 General provisions for wire rope packaging, marking and quality certificates GB/T 2972 galvanized steel wire zinc layer copper sulfate test method GB/T 2976 metal material wire winding test method GB/T 4354 high quality carbon steel hot rolled wire rod GB/T 8358 wire rope actual breaking tensile force determination method GB/T 21839 Test method for steel for prestressed concrete GB/T 24242.2 Non-alloy steel wire rods for yarns - Part 2. General purpose wire rods Numerical correction of YB/T 081 metallurgical technical standard and determination of test value YB/T 5357 steel wire zinc or zinc-5% aluminum alloy YS/T 310 alloy ingot for hot dip galvanizing

3 wire classification

3.1 Plating weight classification The steel wire is divided into two levels according to the weight of the coating. Class A and Class B. 3.2 Tensile strength classification The steel wire is divided into five grades according to the nominal tensile strength. grade 1 strength, grade 2 strength, grade 3 strength, grade 4 strength, and grade 5 strength. ......

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