Indicator Name | Unit | Index value | |||||||
Appearance | / | The coating should be uniform, with a smooth surface and no defects that affect product performance | |||||||
Inner diameter and wall thickness | mm | inside diameter | inside diameter | ||||||
standard | public errand | type 403 | type 404 | ||||||
two-way (±) | one-way (±) | minimum | maximum | minimum | maximum | ||||
| 0.3 | 0.05 | 0.1 | 0.15 | 0.3 | 0.1 | 0.3 | |||
| 0.5-0.8 | 0.1 | 0.2 | 0.2 | 0.5 | 0.15 | 0.5 | |||
| 1 | 0.15 | 0.3 | 0.2 | 0.75 | 0.15 | 0.75 | |||
| 1.5 | 0.15 | 0.3 | 0.2 | 0.75 | 0.15 | 0.75 | |||
| 2 | 0.2 | 0.4 | 0.2 | 0.75 | 0.15 | 0.75 | |||
| 2.5 | 0.2 | 0.4 | 0.2 | 0.75 | 0.15 | 0.75 | |||
| 3 | 0.25 | 0.5 | 0.2 | 0.75 | 0.15 | 0.75 | |||
| 4-6 | 0.25 | 0.5 | 0.3 | 0.75 | 0.2 | 0.75 | |||
| 8 | 0.5 | 1 | 0.3 | 0.9 | 0.2 | 0.75 | |||
| 10-25 | 0.5 | 1 | 0.4 | 0.9 | 0.4 | 0.75 | |||
| Breakdown voltage | Breakdown voltage | KV ≥ | Bullet groove or straight core/100mm foil electrode | median | minimum | median | minimum | ||
At room temperature | 3 | 2.5 | 1.5 | 1 | |||||
Under high temperature | 1.5 | 1.2 | - | - | |||||
After dampness and heat | 1.8 | 1.2 | - | - | |||||
Insulation resistance | At room temperature | Ω | - | ≥1.0×109 | - | ||||
After dampness and heat | ≥1.0×108 | - | |||||||
Flame extension | Burning time | S | ≤60 | ||||||
visual inspection | - | Any one of the three sample flags should not burn. Cotton is not ignited or scorching particles or ignited Ignited by the droplets of. | |||||||
Solder heat resistance | - | Passed (only applicable to hoses with a nominal inner diameter ≤ 5mm) | |||||||
Bending after heating | - | No visible cracks or peeling on the coating (test temperature: 130 ± 2 oC, exposure time: 96 ± 1h) | |||||||
Flexibility at low temperature | - | No visible cracks or peeling on the coating (test temperature: ≤ -25~± 2 oC) | |||||||
Resistance to mold growth | - | First level or better | |||||||
Storage period | - | 12 months | |||||||
