GB/T 21648-2023 English PDFUS$349.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21648-2023: Industrial dense woven wire cloth Status: Valid GB/T 21648: Historical versions
Basic dataStandard ID: GB/T 21648-2023 (GB/T21648-2023)Description (Translated English): Industrial dense woven wire cloth Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: A28 Classification of International Standard: 19.120 Word Count Estimation: 18,178 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Older Standard (superseded by this standard): GB/T 21648-2008 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 21648-2023: Industrial dense woven wire cloth---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.ICS 19.120 CCSA28 National Standards of People's Republic of China Replace GB/T 21648-2008 Metal wire woven dense mesh Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPrefaceⅠ 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Structural type, model and specification 3 4.1 Structural type 3 4.2 Models and specifications 4 4.3 Mark 7 5 Technical requirements 8 6 Inspection methods 8 7 Inspection Rules 9 8 Marking, packaging, transportation and storage10 8.1 Logo 10 8.2 Packaging10 8.3 Transport and storage10 Appendix A (informative) Structural parameters of metal wire braided dense mesh 11ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 21648-2008 "Metal Wire Braided Densified Mesh". Compared with GB/T 21648-2008, except for structural adjustments and In addition to editorial changes, the main technical changes are as follows. a) The symbol of net weight per unit area is changed from ρA to σ (see 3.8, 3.9 of the.2008 edition); b) Deleted MPW395/23, MPW255/36, MPW305/38, MPW315/40, MPW275/30, MPW240/51, etc. There are 17 specifications in total, 1 specification of MPW200/48 has been added, and the average size deviation of the mesh between warp wires and the large mesh size have been changed. Deviation range, average number of bright spots (see Table 1,.2008 version of Table 1); c) Deleted MXW1430/4, MXW1280/4Ⅱ, MXW1180/6, MXW685/11, MXW685/13, MXW650/ 14.MXW590/15, MXW80/101 and MXW80/118 have a total of 9 specifications, and a total of MXW790/5 has been added. Changed the large mesh size deviation range and the average number of bright spots (see Table 2, Table 2 of the.2008 version); d) Deleted MBW1280/10, MBW790/13, MBW650/19-T, MBW790/20, MBW790/20-T, MBW650/21-T, MBW790/22-T, MBW650/25Ⅰ-T, MBW650/25Ⅱ-T, MBW475/29-T and MBW475/35-T, a total of 11 specifications. Changed the large mesh size deviation range and average number of bright spots (see Table 3, Table 3 of the.2008 version); e) Changed the "Mesh Defect Marking" in Figure 5 (see 6.2, 6.2 of the.2008 edition); f) Deleted MPW395/23, MPW255/36, MPW305/38, MPW315/40, MPW275/30, MPW240/51, etc. 17 specifications, MPW200/48 added, 1 specification in total, network thickness changed (see Table A.1, Table A.1 of the.2008 version); g) Deleted MXW1430/4, MXW1280/4Ⅱ, MXW1180/6, MXW685/11, MXW685/13, MXW650/ 14.MXW590/15, MXW80/101 and MXW80/118, with a total of 9 specifications. MXW790/5 has been added, with a total of 1 specification. grid, changed the network thickness (see Table A.2, Table A.2 of the.2008 version); h) Deleted MBW1280/10, MBW790/13, MBW650/19-T, MBW790/20, MBW790/20-T, MBW650/21-T, MBW790/22-T, MBW650/25Ⅰ-T, MBW650/25Ⅱ-T, MBW475/29-T and MBW475/35-T, a total of 11 specifications. The nominal aperture size, absolute aperture, effective section ratio, and mesh thickness have been changed (see Table A.3, Table A.3 of the.2008 version). This document is proposed and coordinated by the National Technical Committee on Particle Characterization and Sorting and Screen Standardization (SAC/TC168). This document was drafted by. Yingkaimo Metal Mesh Co., Ltd., Xinxiang Xinhang Wire Mesh Filter Co., Ltd., Netdu Hebei Technology Service Co., Ltd. Company, China Machinery Productivity Promotion Center Co., Ltd., Hebei Huilong Hydraulic Machinery Co., Ltd., Fujian Qianglun New Materials Co., Ltd., Henan De Source Purification Equipment Co., Ltd., Hangzhou Kuangshi Technology Co., Ltd., Xinxiang Bashan Aviation Materials Co., Ltd., and China Jiliang University. The main drafters of this document. Song Guojian, Hou Changge, Yan Xiangyang, Wang Tan, Chen Lixin, Liu Xufeng, Yan Ming, Wang Yufei, Maas, Huang Chaoqiang, Shi Liqin, Li Songling, Wang Lingpeng, Wang Fangzhou, Jia Lijun, Zhu Peiwu, Wang Yu. This document was first published in.2008 and this is the first revision. Metal wire woven dense mesh1 ScopeThis document specifies the structural types, models, specifications, technical requirements, inspection methods, inspection rules, and standards for industrial metal wire woven dense mesh. Logging, packaging, transportation and storage. This document is applicable to the forward weaving of metal wires with nominal pore diameters of 3μm~347μm and used for gas, liquid filtration and other media separation. Weave dense mesh (hereinafter referred to as dense mesh).2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 15602 Industrial sieving and screening terminology GB/T 17492 Technical requirements and inspection of industrial metal wire mesh JB/T 7860 Metal wire for industrial mesh3 Terms and definitionsThe terms and definitions defined in GB/T 15602 and the following apply to this document. 3.1 The distance between two adjacent warp wires. Note. The mesh size between warp wires is shown in Figure 1. Index symbol description. d0---nominal aperture; d ---Weft diameter; D --- warp diameter; w --- mesh size between warp wires; p --- warp hole pitch, refers to the distance between the center lines of two adjacent warp wires, the sum of the mesh size w between warp wires and the diameter of the wire (d or D). Figure 1 Nominal aperture diameter, mesh size between warp wires, and warp hole spacing of dense mesh ...... |
