E-glass direct roving E glass direct roving is especially designed as reinforcements for thermoset resins. They are compatible with unsaturated polyster(UP), Vinylester(VE), Epoxy(EO). E glass direct roving is used in filament winding and extrusion process, hand lay-up and woven roving products. The end products are FRP pipes, pressure vessels, gratings, chemical storage tanks and so on.