|
applicable temperature range |
pipe minimum temperature
pipe maximum temperature
sheet tape highest temperature |
-40 ℃
+150 ℃
+85 ℃ |
|
temperature stability |
-40 ℃ low temperature performance
+105 ℃ size thermal stability |
surface crack does not appear
28 days ≤ 7% |
|
average temperature thermal conductivity |
BS 874 Part 2 1986
|
-20 0 +20 ℃
0.031 0.034 0.036 W / mk |
|
temperature coefficient of resistance factor breathable |
BS EN ISO 9346:1996
BS 4327 Part 2 1973
|
u ≥ 4500
4.0 * 10 -14 kg / (msPa)
0.13 u gm / Nh |
|
volume
water quality of water absorption |
completely submerged after 28 days
|
average 1.7% maximum 3.0%
maximum 1.5% |
|
combustion properties
oxygen index
burning time
vertical height of the vertical combustion
smoke density rating
|
GB8624-1997
retardant B1 level
|
37.1
10 s
50 mm
59
|
|
tobacco producing toxic combustion |
GA 132-1996 |
prospective security ZA 3 -class qualified |
|
surface spread of flame |
BS 476 Part 7:1987 |
Class1 level |
|
flame propagation behavior
index I
graded index I |
BS 476 Part 6:1989 |
14.4
less than 6 |
|
combustion patterns |
shape to penetrate the walls of the combustion
time
(19mm thick ￠ 12.7-38mm) pipe through the wall of 250mm pipe)
similar to BS 476 Part 20 standard combustion experiment |
carbonation, not contraction, no high-temperature droplet
up to 80 minutes |
