Indicator name

unit

Index value

Exterior

/

The coating should be uniform, the surface should be smooth, and there should be no defects affecting product performance.

Inner diameter and wall thickness

mm

Inner diameter

Wall thickness

Standard

tolerance

406

407

Two way(±)

unidirectional(+)

Min

Max

Min

Max

0.3

0.05

0.10

0.20

0.30

0.15

0.30

0.5-0.8

0.10

0.20

0.25

0.50

0.20

0.50

1

0.15

0.3

0.25

0.9

0.20

0.75

1.5

0.15

0.3

0.35

0.90

0.20

0.75

2

0.20

0.40

0.35

0.90

0.20

0.75

2.5

0.20

0.40

0.40

0.90

0.20

0.75

3

0.25

0.5

0.40

0.90

0.20

0.75

4-6

0.25

0.5

0.50

0.90

0.30

0.75

8

0.50

1.00

0.50

1.20

0.30

0.90

10-25

0.50

1.00

0.65

1.20

0.40

0.90

Breakdown voltage

Numerical value

KV ≥

Projectile slot or straight mandrel / 100mm foil electrode

Median

Lowest value

Median

Lowest value

At room temperature

5.7

4.3

3.0

2.5

Under high temperature

2.6

2.0

1.5

1.2

After damp heat

2.5

2.0

1.8

1.2

Insulation resistance

At room temperature

Ω

-

≥1.0×109

≥1.0×109

After damp heat

≥1.0×108

≥1.0×108

Flame spread

S

≤60

-

Any one of the three samples indicates that the flag should not burn. Cotton is also not ignited by ignited or hot particles or ignited drops.

Solder heat resistance

-

Pass (only for nominal inner diameter ≤ 5mm hose)

Bending after heating

-

No visible cracks or shedding of the coating (test temperature: 130±2°C, exposure time: 96±1h)

Bending at low temperatures

-

No visible cracks or shedding of the coating (test temperature: ≤-25±2°C)