Coaltar impregnated fiber glass - outer wrap is produced from blend of special glass fibrement, plasticised coaltar and other inorganic chemicals. Thus the combination out of this arrived as the product name "coaltar impregnated fiber glass outer wrap". A. R. 's brand is specialist in supplying a variety of outer wrap to meet the existing demand of corrosion technologist world wide.
Standard
exceed the performance requirement of awwa / c-203/2002 and bs 534-1981.
Features and benefits - In organic
- Rot-proof
- Resist attack of moisture and bacteria
- Suitable for high tensile strength
Fiberglass provides added strength to the surface coating for the pipe affording protection against mechanical damage in laying and subsequent soil movements.
Technical specifications for outer wrap
| glass tissue base | 83 gm/m2 (min. ) |
| weight (finished material) | 586-732 gm m2
(12-15 lbs / 100 ft2 |
| thickness | 0. 76 mm (30 mills) |
| tensile strength
(average breaking strength) | |
| longitudinal direction | 6130 n/m of width (min) |
| transverse direction | 4730 n/m of width (min) |
| pliability (1"dia mandrel 25 oc, 2 sec | no cracking |
| weight loss on heatung at 820c for 2 hours | 2 % (max) |
| moisture absorption percebtage of weight at a relative humidity of 95% and 120f(150oc) for 24 hours. | 5 % (max) |
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