GB/T 20887.7-2017 PDF EnglishUS$115.00 · In stock · Download in 9 seconds
GB/T 20887.7-2017: Continuously hot rolled high strength steel sheet and strip for automobile - Part 7: Steels for hydraulic forming Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 20887.7-2017: Continuously hot rolled high strength steel sheet and strip for automobile - Part 7: Steels for hydraulic forming---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/GBT20887.7-2017 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.50 H 46 Continuously hot rolled high strength steel sheet and strip for automobile – Part 7. Steels for hydraulic forming Issued on: SEPTEMBER 7, 2017 Implemented on: JUNE 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 6 4 Classification and designation ... 6 5 Ordering content ... 7 6 Dimensions, shapes and weights ... 7 7 Technical requirements ... 7 8 Test method ... 9 9 Inspection rules ... 10 10 Packaging, marking and quality certification... 11ForewordGB/T 20887, Continuously hot rolled high strength steel sheet and strip for automobile, comprises 7 parts. -- Part 1. High yield strength steel for cold forming; -- Part 2. High hole expansion steel; -- Part 3. Dual phase steel; -- Part 4. Transformation induced plasticity steel; -- Part 5. Martensitic steel; -- Part 6. Complex phase steel; -- Part 7. Steels for hydraulic forming. This Part is Part 7 of GB/T 20887. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part was proposed by China Iron and Steel Association. This Part shall be under the jurisdiction of National Technical Committee on Steels of Standardization Administration of China (SAC/TC 183). The drafting organizations of this Part. Ansteel Co., Ltd., Shougang Group, China Metallurgical Information and Standardization Institute. The main drafters of this Part. Lv Dong, Guan Jichun, Wu Zhaohui, Zhang Weixu, Liu Rendong, Shi Li, Li Qian. Continuously hot rolled high strength steel sheet and strip for automobile - Part 7. Steels for hydraulic forming1 ScopeThis Part of GB/T 20887 specifies the terms and definitions, classification and designation, ordering content, dimensions, shapes, weights, technical requirements, test methods, inspection rules, packaging, marking and quality certification of continuously hot rolled high strength steel sheet and strip. This Part applies to steel strip of thickness not greater than 6 mm, and steel sheet transversely cut or steel strip longitudinally cut from steel strip, which are used for the structural parts of automobile such as auxiliary frames and dashboard supports (hereinafter referred to as “steel sheet and strip”).2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this document. GB/T 222, Permissible tolerances for chemical composition of steel products GB/T 223.5, Steel and iron - Determination of acid-soluble silicon and total silicon content – Reduced molybdosilicate spectrophotometric method GB/T 223.9, Iron steel and alloy - Determination of aluminium content - Chrom azurol S photometric method GB/T 223.16, Methods for chemical analysis of iron, steel and alloy – The chromotropic acid photometric method for the determination of titaninm content GB/T 223.40, Iron, steel and alloy – Determination of niobium content by the sulphochlorophenol S spectrophotometric method GB/T 223.62, Methods for chemical analysis of iron, steel and alloy – The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.64, Iron, steel and alloy - Determination of manganese content - Flame atomic absorption spectrometric method GB/T 223.76, Methods for chemical analysis of iron, steel and alloy – The flame atomic absorption spectrometric method for the determination of vanadium content GB/T 223.79, Iron and steel – Determination of multi-element contents – X-ray fluorescence spectrometry(Routine method) GB/T 223.85, Steel and iron – Determination of sulfur content – Infrared absorption method after combustion in an induction furnace GB/T 223.86, Steel and iron – Determination of total carbon content – Infrared absorption method after combustion in an induction furnace GB/T 228.1, Metallic materials – Tensile testing – Part 1 . Method of test at room temperature GB/T 247, General rule of package, mark and certification for steel plates (sheets) and strips GB/T 709, Dimension, shape, weight and tolerances for hot rolled sheets and strips GB/T 2975, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing GB/T 4336, Carbon and low-alloy steel – Determination of multi-element contents – Spark discharge atomic emission spectrometric method (routine method) GB/T 5028, Metallic materials – Sheet and strip – Determination of tensile strain hardening exponent GB/T 8170, Rules of rounding off for numerical values and expression and judgement of limiting values GB/T 17505, Steel and steel products – General technical delivery requirements GB/T 20066, Steel and iron – Sampling and preparation of samples for the determination of chemical composition GB/T 20123, Steel and iron – Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine HF – initials of “Hydraulic Forming” in English.5 Ordering content5.1 The contract or order based on this Part shall include the following content. a) product name (steel sheet or strip); b) a reference to this Part; c) designation; d) specifications, dimensions and roughness accuracy; e) surface quality level; f) surface condition (when it is an acid pickled surface, it is represented by “P”); g) edge condition; h) oil coated or not; i) control method when used for control (such as electric resistance welding ERW and laser welding LBW); j) weight; k) other special requirements. 5.2 If it is not stated in the purchase contract, including thickness accuracy, surface quality level, edge condition and whether oil is coated or not, then the products of this Part are supplied in accordance with the normal thickness accuracy, common level surface (FA), trimmed condition and oil coated condition.6 Dimensions, shapes and weightsThe dimensions, shapes and weights and tolerances for steel sheet and strip shall be as specified in GB/T 709.7 Technical requirements7.1 Designations and chemical compositions 7.1.1 The designations and chemical composition (by smelting analysis) of steels ......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 20887.7-2017 be delivered?Answer: The full copy PDF of English version of GB/T 20887.7-2017 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 20887.7-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 20887.7-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 20887.7-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 20887.7-2017?A step-by-step guide to download PDF of GB/T 20887.7-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 20887.7-2017". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
