Quality control, verification, inspection, and certification
The tests are typically carried out on a daily basis. Field welds are tested by spark-testing and by tensile testing. Materials have been tested by independed labaratories/institutes worldwide, for instance at a laboratory in Abu Dhabi, where the sewerage projects committee maintains one of the highest standards of Quality Control in the world today.
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KST CONCRETE PROTECTIVE LININGS B.V. IS A SUPPLIER OF BOTH POLYETHYLENE T-GRIP™ LINING AND FLEX PVC T–GRIP™ LINING,
We recommend Polyethylene T-Grip ™ lining for following reasons.
1. PE is approx 35% lighter than pvc. in square mtr. weight, easier to handle.
2. PE is more resistant to bending and twisting due to stiffness
3. PE is easy to apply in cold weather .
4. PE is more easy to apply because it is lighter and more stable.
5. PE is not subject to wrinkle.
6. PE much more resistant to chemical attack.
7. PE is resistant to most common petroleum products.
8. PE is pure resin ( ethylene) no plasticizers, no fillers, ( compared to flex. pvc. has up to 35% filling ).
9. PE is resistant to UV. rays.
10.PE having 600 - 800 % elongation at brake, ( compared to 200-300% with flex. pvc. )
11.PE having 50% more tear resistance, compared to flex. pvc.
12. PE more resistant to abrasion. In sewage lines/ manholes can float stones, sand, wood etc.
13. When PE is heat welded it does not emit ANY toxic fumes or particles.( flex. pvc. needs very good ventilation during welding. )
14. PE is certified for use in potable water.
15. PE produced in sheet thickness from 1,5 to 5 mm.
16. PE having better puncture resistance compared to pvc.
17. PE is easy to weld, and the welds are more secure than pvc welds.
18. PE has high softening point.
19. The water absorption rate of PE is lower than flex. pvc.