GB/T 6893-2022 PDF EnglishUS$335.00 · In stock · Download in 9 seconds
GB/T 6893-2022: Aluminium and aluminium alloys cold drawn (rolled) tubes Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 6893: Historical versions
GB/T 6893-2022: Aluminium and aluminium alloys cold drawn (rolled) tubes---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/GBT6893-2022GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 CCS H 61 Replacing GB/T 6893-2010 Aluminum and aluminum alloys cold drawn (rolled) tubes Issued on. MARCH 09, 2022 Implemented on. OCTOBER 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 4 Categories... 7 5 Quality assurance... 8 6 Technical requirements... 9 7 Test method... 16 8 Inspection rules... 20 9 Marking, packaging, transportation, storage, quality certificate... 24 10 Order form (or contract) content... 25 Appendix A (Informative) Process control of aluminum alloy tubes for aviation... 26 Appendix B (Normative) Quality assurance of aluminum alloy tubes for automobiles ... 311 ScopeThis document specifies the category, quality assurance, technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificates and purchase orders (or contracts) of aluminum and aluminum alloy drawn (rolled) tubes. This document applies to aluminum and aluminum alloy drawn (rolled) seamless tubes and seamed tubes (hereinafter referred to as "tubes").2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 242 Metal materials - Tube - Drift-expending test GB/T 244 Metallic materials - Tube - Bend test GB/T 246 Metallic materials - Tube - Flattening test GB/T 467 Copper cathode GB/T 470 Zinc ingots GB/T 3190 Chemical composition of wrought aluminium and aluminium alloys GB/T 3199 Wrought aluminium and aluminium alloy products - Packing, marking, transporting and storing GB/T 3246.1 Inspection method for structure of wrought aluminum and aluminum alloy products Part 1.Inspection method for microstructure GB/T 3246.2 Inspection method for structure of wrought aluminum and aluminum alloy products - Part 2.Inspection method for macrostructure GB/T 3251 Compression test method for aluminium and aluminium alloys tubes GB/T 3499 Magnesium ingots GB/T 4436-2012 Wrought aluminum and aluminum alloy tubes - Dimensions and deviations GB/T 5126 Eddy current inspection method for cold drawn thin wall tubes of aluminum and aluminum alloy GB/T 7998 Method for evaluating the susceptibility to intergranular corrosion of aluminum alloys GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys3 Terms and definitionsThe terms and definitions, as defined in GB/T 8005.1, as well as the following terms and definitions, apply to this document. 3.1 Coiled tubes Tubes, that are drawn through dies to final dimensions AND delivered in coils.4 Categories4.1 Category, designation, status, size specification The category, designation, status, size specifications shall meet the requirements in Table 1.5 Quality assurance5.1 Aluminum alloy tubes for aviation See Appendix A for the process control of aluminum alloy tubes for aviation. 5.3 Others Where there are quality assurance requirements for other types of tubes, it shall be determined through negotiation between the supplier and the purchaser.6 Technical requirements6.1 Chemical composition The chemical composition of the tube shall comply with the provisions of GB/T 3190. 6.2 Dimensional deviation The dimensional deviation of the tube shall comply with the provisions of the ordinary grade in GB/T 4436-2012.If other grades in GB/T 4436-2012 are required, it shall be determined by the supplier and the buyer through negotiation AND specified in the order (or contract). 6.3 Mechanical properties 6.4 Flaring performance 6.4.1 There shall be no cracks on the surface of 5B02 alloy tubes for aviation use, after the flaring test. 6.5 Compression test There shall be no cracks on the surface of 1035 alloy's O status tubes for aviation use, 6.8 Air tightness When the buyer has airtight requirements for the seamed tube, it shall be determined through negotiation between the supplier and the buyer, AND indicated in the order form (or contract). 6.9 Microstructure The microstructure of the quenched tube shall not have over-burning. 6.10 Macrostructure The surface grain size of 3A21 aluminum alloy tubes for aviation shall be better than the second grade in GB/T 3246.2.If the purchaser has macrostructure requirements for other alloys, it shall be determined through negotiation between the supplier and the purchaser AND specified in the order form (or contract). 6.11 Solderability Seamed tubes shall not have poor welding. 6.12 Salt spray corrosion resistance 6.15 Appearance quality 6.15.1 The surface of the tube shall be the original processed surface; the inner and Salt spray corrosion resistance level Test duration Designation Status Tube wall thickness Corrosion depth outer surfaces of the tube shall be smooth and clean.7 Test method7.1 Chemical composition 7.1.1 The chemical composition analysis method shall comply with the provisions of GB/T 20975 (all parts) or GB/T 7999.The arbitration analysis method shall adopt the method specified in GB/T 20975 (all parts). 7.1.2 The calculation of "Al" content shall comply with the provisions of GB/T 3190. When calculating the "Al" content, the sum -- of the analytical values of conventionally analyzed elements and unconventional analyzed elements suspected to be excessive -- is taken as the "sum of element content". 7.2 Dimensional deviation The measurement method of dimensional deviation shall be carried out, according to the provisions of GB/T 4436-2012. 7.3 Mechanical properties The tensile mechanical property test at room temperature shall be carried out, according to the provisions of GB/T 16865. 7.4 Flaring test 7.5 Compression test The compression test shall be carried out, according to the provisions of GB/T 3251. 7.6 Flattening test The flattening test shall be carried out, according to the provisions of GB/T 246. 7.7 Bending test The bending test shall be carried out, in accordance with the provisions of GB/T 244. The bending angle shall be determined through negotiation, between the supplier and the buyer, meanwhile it shall be specified in the order form (or contract). 7.8 Airtightness 7.11 Solderability 7.14 Eddy current testing The eddy current flaw detection shall be carried out, according to the provisions of GB/T 5126. 7.15 Appearance quality Status Flaring rate % Designation Visual inspection is used for the appearance quality. When the depth of the defect cannot be determined, the grinding method can be used for measurement. For tubes which have an inner diameter of 12 mm ~ 50 mm, the inner surface can be inspected with an endoscope.8 Inspection rules8.1 Inspection and acceptance 8.2 Group-batching The tubes shall be submitted for acceptance in batches. Each batch shall be composed of the same category, designation, status, size specification. The batch weight is not limited. 8.3 Weighing Tubes shall be weighed to check their weight (unless otherwise agreed upon by both parties). 8.4 Inspection items 8.5 Sampling Sampling shall comply with the provisions of Table 10. 8.6.11 If the weldability of any specimen is unqualified, the batch of tubes shall be deemed unqualified. 8.6.12 If the salt spray corrosion of any specimen is unqualified, it shall take double quantity of specimens from this batch of products (including the unqualified product in the original inspection) (or the product represented by the unqualified specimens), for repeated test. If the repeated test results are all qualified, the batch of products is judged to be qualified. 8.6.13 If the intergranular corrosion of any specimen is unqualified, it shall take double quantity of specimens from this batch of products (including the unqualified product in the original inspection) (or the product represented by the unqualified specimens), for repeated test. 8.6.14 If the eddy current flaw detection of any product is unqualified, the tube shall be judged unqualified. 8.6.15 If the appearance quality of any product is unqualified, the tube shall be judged as unqualified.9 Marking, packaging, transportation, storage, quality certificate9.1 Marking 9.1.1 Product marking Marks shall be made on the tubes that pass the inspection. The marks shall at least include the following contents. 9.1.2 Packaging box marking The packing box mark of the tube shall comply with the provisions of GB/T 3199. 9.2 Packaging, transport, storage 9.3 Quality certificate Each batch of tubes shall be accompanied by a product quality certificate, which indicates. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 6893-2022 be delivered?Answer: The full copy PDF of English version of GB/T 6893-2022 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 6893-2022_English with my colleagues?Answer: Yes. 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