HomeTechnical ArticlesMulti-Hole Structure Optimization and Cable-Drawing Efficiency of PVC-U 9-Hole Pipes ——Telecom Pipeline Applications Based on YD/T 841.1 Standard
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Multi-Hole Structure Optimization and Cable-Drawing Efficiency of PVC-U 9-Hole Pipes ——Telecom Pipeline Applications Based on YD/T 841.1 Standard
Hexagonal hole arrangement(Figure 2) for uniform spacing
33mm holesfit 30mm cable diameter
3.2 Inner Wall Drag Reduction
Nano-TiO₂ coatingvs. plain pipes:
Roughness reduced toRa=0.6μm
Friction coefficient from 0.32 to0.21
Efficiency +28%
4. Engineering Solutions
4.1 Telecom Pipeline Standard
Based onYD/T 841.1-2016:
Parameter
GB Requirement
Optimized Standard
Test Method
Single-hole pass rate (%)
≥60%
≥85%
Cable traction test
Flattening deformation (%)
≤10%
≤5%
GB/T 8804.2-2003
Long-term weathering (years)
10
15
Xenon arc aging test
4.2 Cable-Drawing Process
"Three Coatings One Guide"method:
Silicone lubricant(friction <0.15)
Water-based anti-friction agenton cables
Rotary 牵引 headfor bend resistance
5. Field Test Case: Telecom Network Project
Index
Traditional Pipe
Optimized Pipe
Standard Requirement
Single-hole drawing time (s)
45
28
-
Cable damage rate (%)
12
3
≤5
5-year ring stiffness retention (%)
65
82
≥60
6. Advanced Technology Prospects
6.1 Smart Variable-Diameter Pipe
Shape memory polymerexpands holes to35mmduring drawing, then returns to 33mm, reducing resistance by40%.
6.2 Self-Lubricating Microchannels
Micro-injection moldingcreatesnano-lubrication groovesfor permanent drag reduction without coatings.
Conclusion This paper resolves conflicts throughmulti-hole optimization + drag reduction + construction processes. As a professional supplier, we provide: ✅ Custom telecom 9-hole pipes (dn75-dn160mm) ✅ Cable-drawing resistance simulation ✅ Third-party telecom pipeline testing
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