GB/T 21648-2023 in English
VALIDIndustrial dense woven wire cloth
- Issued on:2023-09-07
- Implemented on:2024-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$311.00
《GB/T 21648-2023金属丝编织密纹网》由TC168（全国颗粒表征与分检及筛网标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Core changes in the standard revision
| Revision items | 2008 version | 2023 version | Technical impact |
|---|---|---|---|
| Number of specifications | 44 | 28 | 17 old specifications were deleted, and 3 specifications including MPW200/48 were added |
| Symbol system | ρA | σ | Uniform unit area net weight symbol |
| Tolerance requirements | Loose | Tight | The average deviation of mesh size between warp threads is reduced by 1.2% |
Key parameter system
Nominal aperture (d0): 3-347μm inscribed circle diameter of triangular hole, MPW465/23 minimum 23μm
Absolute aperture (D0): MXW1970/3 only 4-5μm, ensuring interception of smallest particles
Net weight calculation: Plain weave formula σ=6.283D²/(w+D)+7.392d, material density 7.93g/cm³
Structure type comparison
| Type | Code | Warp coverage | Applicable scenarios | Typical specifications |
|---|---|---|---|---|
| Plain weave | MPW | 100% | High precision filtration | MPW315/32(32μm) |
| Fully wrapped twill | MXW | 100% | High pressure condition | MXW790/5(5μm) |
| Non-fully wrapped twill | MBW | 50-70% | Large flow filtration | MBW650/19(19μm) |
Key points for quality inspection
- Defect judgment: Bright spot number ≤8/m² (plain weave), bright track ≤3/30.5m
- Measurement method:
- Aperture detection: 0.05mm reading microscope
- Wire diameter measurement: d≥0.28mm with micrometer, d≤0.09mm with 0.001mm micrometer
- Environmental requirements: d0＜30μm requires darkroom inspection
Implementation suggestions
Selection Guide: Chemical filtration prefers MXW series all-inclusive twill structure, medical field recommends MPW120/77 plain mesh
Installation specifications: Net width 1000/1220mm (deviation +200mm), when supplied in fixed length, 30.5m roll allows +0.3m deviation
Maintenance requirements: Storage humidity ≤60%RH, rainproof and moisture-proof packaging is required for transportation
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