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Product Data Sheet
EN 10300 Type B / AWWA C 203
GT550 is bitumen-impregnated non-woven glass fiber reinforced fabric which is impregnated with bitumen enamel to ensure optimum protection of the fibers and to facilitate bleed-through of the enamel.
The product is manufactured to an exact degree of porosity which promotes effective adhesive between outerwrap and enamel.
GT550 Outerwrap comprises a uniform fabric of chemically resistant borosilicate glass, reinforced longitudinally with continuous filament glass yarns at 8-10 mm centers.
This type of outerwrap is suitable for most soil conditions.
GT550 outerwrap is supplied in customized widths and lengths. After production the product is placed on pallets and packed in shrink film, thus allowing easy transport of the material.
Bitumen Enamel is applied to steel pipes, previously primed with Synthetic Primer, at 215-230°C. Also one or two layer of inner-wrap and one layer of outer-wrap are used in this coating system.
GT550 is stored upright on a dry surface. The product should not be exposed to direct sunlight and maximum storage height is 2.50 m.
GT550 meets and exceeds the requirements for outer-Wraps in EN 10300, type B and AWWA C 203.
All raw materials for GT550 is tested and approved in the laboratories of Varziran. The quality of the finished outer-Wrap is controlled in accordance with related standard or customer’s specific requirements and a test certificate is provided for each batch produced.
|Properties||Unit||Requirement||Method of test|
|Mass per area of base glass/carrier||gr /m2||Min 80||EN 10300, Annex M|
|Type of base glass/carrier||—||Non-woven glass fibre tissue||—|
|Mass per area||gr /m2||Min 550||EN 10300, Annex M|
|Thickness||mm||Min 0.76||EN 1849-1a|
– Transverse N
|EN 12311-1 modified as in Annex N of EN 10300|
A modified to give a cross-sectional area of 645 mm2 and a pressure of 13,8 kPa.