China CCC GB16897-2022 standard update for brake hose product
China CCC GB16897-2022 standard update for brake hose product
The new standard GB16897-2022 has replaced GB16897-2010 since Jan 1st 2023,
For new CCC applications the test will be conducted to the new standard.
For previous approved models, the transition period is 7 months after Jan 1st 2023.
Main changes from the GB16897-2022 standard.
For hydraulic hose:
| Item | GB16897-2022 | GB16897-2010 |
| Inner hole throughput after reducing diameter | Passing without applying external force within 3 seconds | No time limit |
| Maximum expansion |
Pressure: 6.9MPa, 10.3MPa for diameter≤3.2mm; 20MPa for diameter >3.2~5mm |
Pressure: 6.9MPa, 10.3MPa |
| brake fluid compatibility |
Burst strength≥49.0MPa for diameter≤3.2mm; Burst strength≥34.5.0MPa for diameter>3.2mm; Temperature: 120±2℃ |
Burst strength≥34.5.0MPa Temperature: 90±1℃ |
| tensile strength |
Slow tensile (25mm/min±3mm/min), strength≥1446N; Rapid tensile(50mm/min±3mm/min)，strength≥1646N; |
Slow tensile (25mm/min±3mm/min), strength≥1446N; |
| Water absorption | Immerse the hose assemble in distilled water (85±2℃) for 70±2h | Cut 28.6mm±2mm outer layer at the center and immerse in distilled water (room temperature) for 70±2h |
| Cold resistance | -48~-45℃ for 70±2h | -40~-45℃ for 70±2h |
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