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| Customized: | Customized |
| Certification: | ISO, CE |
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Specification | Outside diameter dem/mm | Wall thickness and tolerance mm | Out-of-roundness % | BEND RADUS UNSUP (IN) | SWPS (LBS) | |||
Nominal value | Tolerance | Standard Value | Tolerance | Before Coiling | After Coiling | 4 | 33 | |
∅16/13a | 16 | +0.2 | 1.5 | +0.20 | ≤3 | ≤5 | 6 | 76 |
0 | -0.15 | 7 | 96 | |||||
∅25/21b | 25 | +0.3 | 2.0 | +0.20 | ≤3 | ≤5 | 8 | 93 |
0 | -0.15 | 9 | 114 | |||||
∅32/26 | 32 | +0.3 | 2.5 | +0.30 | ≤2 | ≤3 | 10 | 268 |
0 | -0.20 | 10 | 167 | |||||
∅33/28×4c | 33 | - | 2.5 | +0.30 | ≤2 | ≤3 | 11 | 264 |
-0.20 | 13 | 305 | ||||||
∅34/28 | 34 | +0.3 | 3.0 | +0.30 | ≤2 | ≤3 | 13 | 229 |
0 | -0.15 | 14 | 581 | |||||
∅38/33×5c | 38 | - | 2.5 | +0.30 | ≤2.5 | ≤3.5 | 14 | 352 |
-0.20 | 18 | 615 | ||||||
∅40/33 | 40 | +0.4 | 3.5 | +0.35 | ≤2.5 | ≤3.5 | 17 | 425 |
0 | -0.20 | 21 | 701 | |||||
∅41/36×6(7)c | 41 | - | 2.5 | +0.35 | ≤2.5 | ≤3.5 | ||
-0.20 | ||||||||
∅46/38 | 46 | +0.4 | 4.0 | +0.35 | ≤3 | ≤5 | ||
0 | -0.20 | |||||||
∅50/41 | 50 | +0.5 | 4.5 | +0.40 | ≤3 | ≤5 | ||
0 | -0.30 | |||||||
∅63/54 | 63 | +0.6 | 5.0 | +0.40 | ≤3 | ≤5 | ||
0 | -0.30 | |||||||
Note: 1. The specification dimensions and tolerances of ribbed pipes shall be determined through negotiation between the supplier and the buyer. 2. The specification dimensions, model numbers and tolerances of other products shall be determined through negotiation between the supplier and the buyer. | ||||||||
a Microducts for installation inside bundle ducts. b Communication sub-ducts suitable for installation inside large-diameter protective ducts. c Outer sheaths suitable for bundle ducts. | ||||||||



Physical and Chemical Properties of HDPE Bundle Pipe JT/T496-2018 | |||||
Items | Technical Index | ||||
Φ33/28 | Φ38/33 | Φ41/36 | |||
1 | Outer Wall Hardness HD | ≥59 | |||
2 | Tensile Yield Strength MPa | ≥21 | |||
3 | Elongation at break % | ≥500 | |||
4 | Ring-Stiffness | ≥40 | ≥50 | ||
5 | Recovery Rate | When the outer diameter deformation is 50% of the original outer diameter under vertical pressure, the load is immediately unloaded, the sample is not broken, not stratified, and the outer diameter can be naturally restored to more than 85% of the original in 10min. | |||
6 | Resistance to drop hammer impact | Normal Temperature | The temperature is 23℃, the height is 2m, and 10 samples are impacted with a heavy hammer of 15.3kg. If a single sample does not break or the crack width is not greater than 0.8mm, it is regarded as passing, and the number of passing samples should not be less than 9 | ||
Low Temperature | The temperature is -20℃, the height is 2m, and 10 samples are impacted with a heavy hammer of 15.3kg. If a single sample does not break or the crack width is not greater than 0.8mm, it is regarded as passing, and the number of passing samples should not be less than 9. | ||||
7 | Longitudinal elongation % | ≤3.0 | |||
8 | Brittle Temperature℃ | -75 | |||
9 | Resistance to environmental stress cracking | 48h,failure rate≤20% | |||
10 | Melt Flow Rate MFR (g/10min) | MFR(190/2.16)≤0.5 | |||
11 | Resistant to chemical media | The samples were soaked in 5% NaCL, 40% HSO, and 40% NaOH solutions respectively for 24h. No obvious discoloration or corrosion was observed. | |||








