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GB/T 3082-2020 English PDF

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GB/T 3082-2020: Galvanized or zinc-aluminum alloy-coated low-carbon steel wire for armoured cables
Status: Valid

GB/T 3082: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 3082-2020English189 Add to Cart 3 days [Need to translate] Galvanized or zinc-aluminum alloy-coated low-carbon steel wire for armoured cables Valid GB/T 3082-2020
GB/T 3082-2008English399 Add to Cart 3 days [Need to translate] Galvanized or zinc-5% aluminum-mixed mischmetal alloy-coated low carbon steel wire for armouring cables Obsolete GB/T 3082-2008
GB/T 3082-1984English199 Add to Cart 2 days [Need to translate] Galvanized low carbon steel wire for armouring cables Obsolete GB/T 3082-1984

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Basic data

Standard ID GB/T 3082-2020 (GB/T3082-2020)
Description (Translated English) Galvanized or zinc-aluminum alloy-coated low-carbon steel wire for armoured cables
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H49
Classification of International Standard 77.140.65
Word Count Estimation 10,191
Date of Issue 2020-09-29
Date of Implementation 2021-04-01
Older Standard (superseded by this standard) GB/T 3082-2008
Regulation (derived from) National Standard Announcement No. 20 of 2020
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 3082-2020: Galvanized or zinc-aluminum alloy-coated low-carbon steel wire for armoured cables


---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.
Galvanized or zinc-aluminum alloy-coated low-carbon steel wire for armoured cables ICS 77.140.65 H49 National Standards of People's Republic of China Replace GB/T 3082-2008 Hot-dip galvanized and zinc-aluminum alloy coatings for armored cables Low carbon steel wire 2020-09-29 released Implementation on 2021-04-01 State Administration for Market Regulation Issued by the National Standardization Management Committee Hot-dip galvanized and zinc-aluminum alloy coatings for armored cables Low carbon steel wire

1 Scope

This standard specifies the use of hot-dip galvanized and hot-dip galvanized -5% aluminum or 10% aluminum alloy coated low-carbon steel wire (hereinafter referred to as steel wire) for armored cables Classification and marking, order content, technical requirements, test methods, inspection rules, packaging, marking and quality certificates. This standard applies to hot-dip galvanized low-carbon steel wire for armored cables used for submarine and underground cables for communication, automatic control or power Or hot-dip galvanized-5% aluminum or 10% aluminum alloy coated steel wire used to improve the corrosion resistance of the coating.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 228.1 Tensile Test of Metallic Materials Part 1.Room Temperature Test Method GB/T 239.1 Wires of metallic materials Part 1.Unidirectional torsion test method GB/T 470-2008 zinc ingot GB/T 701 Low carbon steel hot rolled round wire rod GB/T 1839 Steel product galvanized coating quality test method GB/T 2103 General requirements for steel wire acceptance, packaging, marking and quality certificate GB/T 2976 Wire winding test method for metallic materials GB/T 24242.2 Non-alloy steel wire rod for wire making Part 2.General purpose wire rod YB/T 081 Metallurgical Technology Standard Numerical Rounding and Determination of Testing Numerical Value YS/T 310 zinc alloy ingot for hot dip

3 Classification and marking

3.1 Type of coating The coating categories are divided into three categories. the first category is pure zinc coating; the second category is zinc-5% aluminum alloy coating; the third category is zinc-10% aluminum alloy coating. The coating type should be indicated in the contract. 3.2 Plating group The steel wire coating is divided into two groups according to weight. group Ⅰ and group Ⅱ. 3.3 Mark The marking of the steel wire consists of the coating category, the nominal diameter of the steel wire, the coating group and the number of this standard. Specific examples are as follows. Example 1.Galvanized steel wire for group I armored cables with a nominal diameter of 4.0mm is marked as. Example 2.Galvanized -5% aluminum alloy coated steel wire for group I armored cable with a nominal diameter of 2.5mm is marked as. Example 3.Galvanized-10% aluminum-alloy coated steel wire for group I armored cable with a nominal diameter of 2.7mm is marked as.

4 Order content

The contract for ordering according to this standard shall contain the following main contents. a) Number of this standard; b) Product name; c) Type of coating; d) Nominal diameter; e) Coating group; f) weight; g) Other requirements. 5 Size, shape, weight and allowable deviation 5.1 Nominal diameter and allowable deviation The nominal diameter and allowable deviation of the steel wire should meet the requirements of Table 1.If the supply and demand parties have agreed otherwise, the agreement shall be implemented. 5.2 Length and allowable deviation The length of the steel wire is determined according to the requirements of the buyer, and the allowable deviation is 0%~2% of the length. If there is another agreement between the supplier and the demander, the agreement shall be implemented. 5.3 Out-of-roundness The out-of-roundness of the steel wire should not be more than half of the diameter tolerance. 5.4 Weight The steel wire is delivered according to actual weight. Table 4 Inspection items, sampling quantity, sampling location and sample method of steel wire 7.2 Wire diameter The diameter of the steel wire should be measured once in the direction of 90° with each other on the same cross section, and the average value of the two measurements shall be taken as the diameter of the steel wire. 7.3 Out-of-roundness Wire out-of-roundness is the difference between the largest diameter and the smallest diameter on the same cross-section. 7.4 Winding test The steel wire is tightly wound on the mandrel specified in Table 2 at a speed not exceeding 15r/min. 7.5 Coating adhesion test The steel wire is tightly wound on the mandrel specified in Table 3 at a speed not exceeding 15r/min. 7.6 Numerical rounding The rounding and judgment of the steel wire inspection and the measured value of the inspection shall be carried out according to YB/T 081.

8 Inspection rules

8.1 Inspection and acceptance The steel wire is inspected by the supplier's quality supervision department. The purchaser has the right to carry out acceptance inspection in accordance with the provisions of this standard. 8.2 Batching rules Unless otherwise agreed by the supplier and the demander, the steel wire shall be checked and accepted in batches. Each batch shall be composed of steel wires of the same coating category, the same coating group, and the same diameter. 8.3 Re-inspection and judgment The re-inspection and judgment rules of steel wire shall be carried out in accordance with the provisions of GB/T 2103. 9 Packaging, marking and quality certificate 9.1 The marking and quality certificate of the steel wire shall meet the requirements of GB/T 2103.The zinc-5% aluminum or 10% aluminum alloy coated steel wire shall be added with steel The content of the aluminum content of the wire coating. 9.2 When the buyer has no special requirements, the steel wire packaging should meet the requirements in GB/T 2103.

Appendix A

(Normative appendix) Determination method of aluminum content in steel wire coating A.1 Principle Add an excess of EDTA standard solution to the slightly acidic solution to form complexes with iron, zinc, copper and other elements, and then store it in acetic acid. At the bottom, boil all aluminum to form complexes. Using xylenol orange as an indicator, use lead nitrate standard solution to drip back excess EDTA. Join The fluoride demasks Al-EDTA and releases the same amount of EDTA as aluminum, which is then titrated with lead nitrate standard titration solution to calculate the aluminum content. A.2 Reagents A.2.1 Potassium fluoride (KF·2H2O). A.2.2 Decoating hydrochloric acid corrosion inhibitor. HCl (11) and hexamethylenetetramine (3%) are mixed in equal volume. A.2.3 Hydrochloric acid (1 1). A.2.4 Ammonia (1 1). A.2.5 Ammonium acetate solution (50%). A.2.6 Acetic acid-sodium acetate buffer solution (pH=5.5). Weigh.200g of sodium acetate (containing 3 crystal water), dissolve in water, and add 9mL of ice Acetic acid, then diluted with water to 1000mL. A.2.7 EDTA standard solution, c(EDTA)=0.05mol/L. Weigh 19g EDTA (containing 2 crystal water) in a 500mL beaker After dissolving in water, transfer to a 1000mL volumetric flask and dilute to the mark with water. A.2.8 Lead nitrate standard titration solution, c[Pb(NO3)2]=0.025mol/L. Weigh 8.3g lead nitrate, dissolve it in water, and move it to Dilute to the mark in a 1000mL volumetric flask and calibrate. A.2.9 Congo red test paper. A.2.10 Xylenol orange indicator (0.25%). A.3 Analysis steps A.3.1 Sample preparation According to formula (A.1) calculation results (retained integer, unit. cm) cut the total length of the sample, the detection needs can be divided into several small sections. A.3.2 Test process Wipe the surface of the sample with gasoline and dry it, then wipe it with absolute ethanol and dry it, put it in an oven and bake it at 105°C for 30 minutes, and then dry it. Cool in the device for 30 minutes, weigh it to obtain m1, then put it in 100mL de-plating solution (A.2.2) to remove the coating, then wash the sample with distilled water, and then

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