GB/T 3903.19-2008 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB/T 3903.19-2008: Footwear -- Test methods for accessories: Metallic accessories -- Corrosion resistance 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 3903.19-2008: Footwear -- Test methods for accessories: Metallic accessories -- Corrosion resistance---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/GBT3903.19-2008 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 61.060 Y 78 GB/T 3903.19-2008 / ISO 22775.2004 Footwear - Test methods for accessories. Metallic accessories - Corrosion resistance (ISO 22775.2004, IDT) Issued on: JUNE 18, 2008 Implemented on: MAY 1, 2009 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee. Table of ContentsForeword ... 3 1 Scope ... 4 2 Terms and definitions ... 4 3 Principle... 4 4 Apparatus, materials and reagents ... 5 5 Test specimen ... 5 6 Conditioning ... 6 7 Procedure ... 6 8 Calculation and expression of results ... 8 9 Test report ... 8ForewordThis Part of GB/T 3903 identically adopts the International Standard ISO 22775.2004 Footwear - Test methods for accessories. Metallic accessories - Corrosion resistance (English version). They are exactly identical in technical content. This Part of GB/T 3903 only makes the following editorial modifications. a) modified “this European Standard” to “this Part of GB/T 3903” (Translator Note. Original text in Chinese is European Standard); b) deleted the foreword of ISO 22775.2004; c) deleted the table of contents of ISO 22775.2004; d) modified the density unit from “g/dm3” to “g/L”. This Part was proposed by China Light Industry Association. This Part shall be under the jurisdiction of National Technical Committee on Footwear of Standardization Administration of China. The drafting organizations of this Part. China Institute of Leather and Footwear Industry, Cornell Group Limited. Main drafters of this Part. Zhang Weijuan, Dai Jinqing. Footwear - Test methods for accessories. Metallic accessories - Corrosion resistance Warning. the user of this Part of GB/T 3903 should have practical experience in regular laboratory. This Part does not point out all the possible safety problems. The user shall have responsibility to take appropriate safety and healthy measures, in accordance with relevant regulations.1 ScopeThis Part of GB/T 3903 specifies two methods for determining the propensity of a metal surface to either change visually due to contamination by atmospheric pollution (Method 1. sulphide tarnishing ), or to corrode due to the action of salt water (Method 2. salt water corrosion). This Part is applicable to metallic accessories of footwear irrespective of the kind.2 Terms and definitionsFor the purposes of this Part of GB/T 3903, the following term and definition applies. 2.1 corrosion resistance propensity of a metal surface either not to change visually due to chemical attack by atmospheric pollution, or not to be altered due to the action of salt water3 Principle3.1 Method 1 A test specimen is stored in a moist atmosphere containing a low concentration of hydrogen sulphide gas for 1 h. The specimen is then assessed subjectively for signs of discoloration. 3.2 Method 2 Cotton lawn, saturated with sodium chloride solution, is wrapped around a test ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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