GB/T 45817-2025 in English
VALIDQuality grade of consumer products—Ceramic tiles
- Issued on:2025-05-30
- Implemented on:2025-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
$466.00
| Standard No: | GB/T 45817-2025 |
| Document status: | VALID |
| Title in English: | Quality grade of consumer products—Ceramic tiles |
| Title in Chinese: | 消费品质量分级 陶瓷砖 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2025-05-30 |
| Implemented on: | 2025-12-01 |
| ICS Classification: | 91.100.25-Ceramic building products |
| Chinese Classification: | Q31-Building sanitary ceramics |
| Professional Classification: | GB-National Standard |
| Related Keywords: | consumer products ceramic tiles introduction analysis
quality grade traditional ceramic tiles bathroom floor tiles ceramic rock slabs |
| Related Topics: | consumer product standards
relatively poor, brick consumer goods ceramic direction Annual electricity consumption ceramic tile |
《GB/T 45817-2025消费品质量分级 陶瓷砖》由TC249（全国建筑卫生陶瓷标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
Analysis of the core content of the standard
| Key indicators | AAAAA grade | AAAA grade | AAA grade |
|---|---|---|---|
| Modulus of rupture (thickness ≥7.5mm) | ≥45MPa | ≥42MPa | ≥40MPa |
| Anti-slip coefficient of bathroom floor tiles | ≥0.70 | ≥0.65 | ≥0.60 |
| Allowable value of roller mark | ≤0.18mm | ≤0.23mm | ≤0.28mm |
Technology Evolution Analysis
This standard introduces the special grading requirements of ceramic rock slabs for the first time, and sets independent dimensional deviation indicators for large-size products (≥1800mm): AAAAA grade allows ±0.5mm deviation, which is 40% higher than the accuracy requirements of traditional ceramic tiles. In the machinability test, AAAAA grade requires 20° sharp angle cutting without cracking, reflecting the industry's emphasis on deep processing technology.
Implementation Suggestions
Manufacturers should focus on:
- Establish a water absorption uniformity control system, and the relative range of AAAAA-level products is required to be ≤25%
- Upgrade the accuracy of water jet cutting equipment to ±0.1mm to meet high-level processing requirements
- Improve the grading and identification system, and it is recommended to use QR code to integrate test report data
Comparison of key test methods
| Test items | Equipment requirements | Judgment points |
|---|---|---|
| Roller mark detection | Specialized detector (accuracy 0.01mm) | Take the maximum value of 5 bricks |
| Processability test | Water jet machine (pressure 280-350MPa) | No chipping/cracking |
| Uniformity of water absorption | Vacuum water absorption device | Five-point range control |
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