·Brief Introduction |
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·Design Theory and Advantages
Structure: Rabbet joint spiral winding pipe winds plastic boards with rivet and tenon via spiral winding moulder. Timely rabbet joint type self-locking structure, rubber airproofing bar is embedded at the bottom, bonding agent is coated at the two sides. The two boards will form one fixed integer while joining and self-locking. The pipes are divided into one layer, two layers and multi-layer type. Structure of Products? |
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Tie-in |
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· Inspection
Inspection Report
No. |
Item |
Technical Index |
Result |
Judge |
1 ? |
Physical and mechanical performance |
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|
|
? |
Intensity of stretch and tension? MPa ? |
≥40 |
45.4 |
Up to standard |
? |
Cracked elongation (%) |
≥80 |
100 |
Up to standard |
? |
Uygur card softening point ? |
≥80 |
81.0 |
Up to standard |
? |
Curved modulus of elasticity? MPa ? |
≥2500 |
3378 |
Up to standard |
? |
State after heating |
No bubble, crack and spot |
|
Up to standard |
? |
Range of changes after heating (%) |
±2.5 |
± 1.9 |
Up to standard |
? |
Low-temperature falling |
≤1 |
0 |
Up to standard |
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Amount of cracked ones |
|
|
|
? |
Shocking intensity of support |
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|
|
a |
|
≥32 |
33.9 |
Up to standard |
b |
|
≥15 |
18.7 |
Up to standard |
? |
Resistance to corrosion |
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|
|
a |
10%HCL dipping 4h |
No shedding |
|
Up to standard |
b |
10%HNO dipping 4h |
No shedding |
|
Up to standard |
c |
10%H2SO dipping 4h |
No shedding |
|
Up to standard |
d |
10%NAOH dipping 4h |
No shedding |
|
Up to standard |
? |
Rigidity of ring (KH/m) |
≥8.0 |
|
|
? |
Airproofing Test |
No leaks |
No leaks |
Up to standard |
2 ? |
Spec and Size |
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|
|
? |
Width |
95±1.0 |
95.5 |
Up to standard |
? |
Thickness |
3.2±0.3 |
3.3 |
Up to standard |
? |
Width of reinforcing ribs |
11.5±0.5 |
11.7 |
Up to standard |
? |
Space between reinforcing ribs |
12.5±0.5 |
12.6 |
Up to standard |