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Technical specifications of PVC-U water supply pipe:
1. The appearance The inside and outside surface of the pipe should be glossy, smooth, no breach, no concave, no decomposed and discolored line and no other exterior disfigurement that can affect the performance of the pipe. The pipe should not contain any visible extraneous matter. The end surface should be smooth after cutting, and be perpendicular to the axis of the pipe.
2. Opaqueness For the pipe to be used on the ground, opaqueness is required.
3. Length The length of the pipe is generally 4 meters or 5 meters or 6 meters, which can also be set by negotiation between both sides.
4. Color The color is generally grey. Other color can also be made according to the negotiation between both supplier and customers.
5. Sanitary properties Water supply PVC-U pipes and fittings are in conformity with the Health Evaluation Criterion about the potable water supply equipments and safeguard issued by Ministry of Health
Item | Techical Index | Testing Method |
Vicat softening temperature | ≥80℃ | ISO4422.2-2003 |
Longitudinal eversion | ≤5% | |
dichloromethane Immersion | 15℃±1℃, 30min, no hange on surface | |
(0℃ TIR)Falling eight mpact est | ≤10% | |
Hydraulic pressure test | no hange &leakage | |
Connection sealing test | no hange &leakage |
Property | Index | ||||
Vicat softening temperature | ≥74℃ | ||||
Oven test | Meet Gb/T8803-2001 | ||||
Drop test | No change | ||||
Hydraulic Pressure test | dn | ℃ | Mpa | h | Index |
dn≤90 | 20 | 4.2×PN | 1 | no hange &leakage | |
3.2×PN | 1000 | ||||
dn>90 | 20 | 3.36×PN | 1 | no hange &leakage | |
2.56×PN | 1000 |
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