内径(mm)
Inner Diametor

壁厚(mm)
Wall Thickness

标称
Nominal

公差
Tolerance

最小
Minimun

最大
Maximun

1；1.5

±0.15

0.20

0.75

2；2.5；

±0.20

0.20

0.75

3

±0.25

0.20

0.75

3.5；4；5；6

±0.25

0.30

0.75

7；8

±0.50

0.30

0.75

9；10；12；14；16；18；20

±0.50

0.40

0.90

23；25；27

±0.05

0.40

1.0

性能指标 Property requirements

性能Property

指标Requirements

耐焊热性 Resistance to soldering heat

通过（仅限内径5毫米及以下）
Pass (only for sleeving having nominal bore Diameter up to and including 5mm)

绝缘电阻
Insulation resistance
室 温 时 At room temp

10³MΩ
10³MΩ

火焰蔓延性
Flame propagation

方法A，最大为60秒，另外三次试验中的任何一次的标旗下应烧掉，并且燃烧或灼烧颗粒不应点燃棉花
Method A,60s max.In addition,the indicator flag on any one of the three test specimens shall not be burned nor shall flaming or glowing particles or flaming draps ignite the cotton.

耐油
Oil resistance

软管在105±2℃的变压器油中浸24小时，漆膜不应于玻璃丝管脱开或产生开裂，允许漆管颜色变深。
The coating should not crack or appear detached after the sleeving has been dipped in transformer oil for 24h at a temperature of 105±2℃.But the colour of the sleeving is allowed to grow darker.

耐苯
Benzene
resistance

软管在常温甲苯液中浸4小时，漆膜不发粘或脱落。
The coating should not be sticky or show delamination when the sleeving has been kept in methylbenzene at a normal temperature for 4 hours.

热寿命，20000小时的温度指数
Thermal endurance,Temperature index at 20000 hours

155℃

击穿电压，千伏 Breakdown Voltage kv
直芯棒-25mm电极 Straight mandrel with 25mm electrode

室温下
Room temp

高温下
Elevated temp

湿热处理后
Damp heat

中值 Central value

4.0

1.6

1.2

最低Lowest individual value

2.5

1.0

0.8