GB/T 4957-2003 PDF EnglishUS$90.00 · In stock · Download in 9 seconds
GB/T 4957-2003: Non-conductive coatings on non-magnetic basis metals -- Measurement of coating thickness -- Eddy current 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 4957: Historical versions
GB/T 4957-2003: Non-conductive coatings on non-magnetic basis metals -- Measurement of coating thickness -- Eddy current---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/GBT4957-2003 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.220.40 A 29 GB/T 4957-2003 / ISO 2360:1982 Replacing GB/T 4957-1985 Non-conductive coatings on non-magnetic basis metals - Measurement of coating thickness - Eddy current (ISO 2360:1982, IDT) ISSUED ON: OCTOBER 29, 2003 IMPLEMENTED ON: MAY 01, 2004 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Principle ... 4 4 Factors affecting measurement certainty ... 5 5 Calibration of instruments ... 7 6 Measurement procedure ... 8 7 Accuracy requirements ... 9ForewordThis Standard identically adopts ISO 2360:1982 “Non-conductive coating on non-magnetic basis metals - Measurement of coating thickness - Eddy current method” (English edition). This Standard replaces GB/T 4957-1985 “Non-conductive coatings on non- magnetic metal substrates - Measurement of coating thickness - Eddy current method”. Based on ISO 2360:1982, this Standard made the following editorial modifications: a) used “this Standard” to replace “this International standard”; b) deleted the foreword of ISO 2360:1982; c) used national standards that adopt international standards as references; d) added normative references. This Standard was proposed by China Machinery Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee on Metal and Non-metal Coatings of Standardization Administration of China. Main drafting organization of this Standard: Wuhan Institute of Material Protection. The drafting organization of this Standard: Zhejiang Yueqing Xinfeng Enterprise Co., Ltd. Main drafters of this Standard: Yu Hui, Zhong Lichang, Feng Yongchun, Jia Jianxin, Zheng Xiulin. Version of standard substituted by this Standard is: - GB/T 4957-1985. Non-conductive coatings on non-magnetic basis metals - Measurement of coating thickness - Eddy current1 ScopeThis Standard describes a method for non-destructive measurements of the thickness of nonconductive coatings on non-magnetic, electrically conductive (generally metallic) basis materials, using amplitude-sensitive eddy current instruments. The method is particularly applicable to measurements of the thickness of most oxide coatings produced by anodizing, but is not applicable to all conversion coatings, some of which are too thin to be measured by this method (see Clause 7). Although theoretically, the method can be used for measurements of the thickness of coatings on magnetic basis materials, its use for this application is not recommended. In such cases, the magnetic method specified in GB/T 4956 should be used.2 Normative referencesThe provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 4956, Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method (ISO2178:1982, IDT)3 PrincipleAn eddy current probe (or integrated probe/instrument) is placed on the surface of the coating(s) to be measured, and the thickness is read from the instrument's readout. ......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 4957-2003 be delivered?Answer: The full copy PDF of English version of GB/T 4957-2003 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 4957-2003_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 4957-2003_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 4957-2003 -- 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.Question 5: Should I purchase the latest version GB/T 4957-2003?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4957-2003 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB/T 4957-2003?A step-by-step guide to download PDF of GB/T 4957-2003_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 4957-2003". 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 |
