E312 direct roving is produced for filament winding producing method for FPR products, coated with silane compatible with unsaturated polyester, vinylester and epoxy resins. It is mainly used to produce FRP pipes, pressure vessels, chemical storage tanks and complicated FRP products etc. It is widely used in oil, gas, chemical industry and mining and so on.

Technical Parameters:

Type of glass: E

Filament diameter (um): 13, 17-24  +-1um

Linear density (Tex): 300, 600, 800, 1200, 2400, 4800, 9600  ±5%

Moisture content: ≤0.10

LOI: 0.55±0.15%

Product Feature:

1. Uniform tension, little catenaries.

2. Fast & complete wet out in resins.

3. Good mold-ability and no fuzz.

4. Excellent mechanical corrosion resistance.


Fiberglass roving should be stored in its original packing in a dry and cool place. Best conditions are at temperatures from 15 to 35℃ and humidity between 35 to 65%. To ensure safety and avoid damage to the product, the pallets should not be stacked more than three layers high, when the pallets are stacked in 2 or 3 layer, care should be taken to correctly and smoothly move the top pallet.

Filament winding roving

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CYS glass fiber