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Executive Standard
JT/T496-2004 HDPE Silicon Core Plastic Pipe for Highway Underground Communication Pipe

Product Introduction
HDPE silicon core pipe, simply called silicon pipe, is a new type complex pipe with silica gel solid lubricant inside inner wall, which is simultaneously extruded for complex by three sets of extruding machine. HDPE is the major raw material and solid lubricant silica gel with lowest friction factor for core layer.

Application Scope
Pipe system of outdoor communication cable and optical fiber cable, public information network, public transportation system, cable television network and expressway communication etc.

Characteristics
1.The silicon core layer of inner wall is permanent solid lubricant. The friction characteristic for silicon core layer of inner wall keeps constant and cable in pipe can be repeatedly extracted;
2. The silicon core layer of inner wall is synchronously extruded into HDPE pipe wall and evenly distributed along the whole inner pipe wall. The silicon core layer of inner wall has the same physical and mechanical characteristics as HDPE so that it has the same service life as silicon pipe because of no peel-off and break-off;
3. The silicon core layer of inner wall does not react with water so water can be used to rinse pipe if emergency accident occurs;
4. Silicon core pipe has small curvature radius which is ten times larger than its outer diameter. When curve and drop places encountered during laying pipe, it can be adjusted by environmental topography without any processing and man well set for transition;
5. The length of each set of silicon core pipe can be made for any length. Normally each set of has a standard length of 2000m in consideration of the safety of transportation and the convenience of construction;
6. Convenient construction and considerably low engineering cost. Silicon core pipe does not require big pipe with outer lining and can directly pass cable without sub-pipe. Because of the normal 2000m length for each set of silicon core pipe, man well can be located every 1000m. Air purge can be used during passing cable and only 15 minutes is taken every 1000m

Size

Product specification table (Silicon core pipe)
Specification
Outside diameter              mm
Wall thickness
mm
Φ63/53
63
5.0
Φ63/54
63
4.5
Φ50/41
50
4.5
Φ46/38
46
4.0
Φ43/37
43
3.0
Φ43/38
43
2.5
Φ40/33
40
3.5
Φ38/32
38
3.0
Φ38/33
38
2.5
Φ34/28
34
3.0
Φ34/30
34
2.0
Φ32/26
32
2.5
Φ32/28
32
2.0
Φ30/24
30
2.5
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