| Q1. |
Why HDPE pipes are the best for use in the slab? |
- They are supplied in roll form (100m), that is, long lengths can be used (in the slab / false ceiling) without joints (no joints means no chance of leakage). For example, if the dropper is at one end of the building, the HDPE pipe can be pulled right to the kitchen in the floor slab without any joints.
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- Very good impact properties as HDPE is semi-rigid/flexible, it absorbs impact well. This property is useful in the slab as on contact with the vibrator (during pouring of the concrete) the pipe will not shatter. If tools are accidentally dropped by workers onto the pipe, it will not crack as it has very high impact strength.
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| Q2. |
Is HDPE pipe suitable for pressure pump systems? |
| Yes. HDPE pipe has superb water hammer absorption properties. |
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| Q3. |
What is the working pressure rating for BBB Hansen HDPE pipe? |
| 20mm - PN 16, 25mm,32mm,40mm,50mm - PN12.5 for a minimum life span of 50 years. |
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| Q4. |
Can HDPE pipes be exposed to sunlight? |
| Yes. HDPE pipes are black in colour; this is because Carbon Black is used as a pigment. Carbon Black is the best inorganic UV light stabilizer known to man. |
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| Q5. |
Can HDPE pipe be used in false ceilings (high level system)? |
| Yes. |
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| Q6. |
In what lengths do you supply BBB/Hansen HDPE pipes? |
| We supply in length form (5 meter) and roll form (100 meter). |
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| Q7. |
What standards are BBB Hansen HDPE pipes manufactured to? |
| MS 1058. |
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| Q8. |
To what radius can HDPE pipes be bent to? |
| It can be bent to a radius of 20 times the diameter of the pipe. |
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| Q9. |
How do you pressure test a HDPE plumbing system for leaks? |
| Pump the system to 15 bar, on reaching 15 bar, immediately drop the pressure in the system to 3 bar. The pressure in the system must go up to 5 bar by itself within 15 minutes. This test should be conducted before the system is buried in concrete. |
