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Pultrusion is the process of pulling fiberglass reinforcements such as mats and strands through a proprietary resin and heated die. The result is a specific complex profile that can be cut to any length. This process offers speed and consistency making it the best method for producing high-volume linear fiberglass products that require constant cross sections.
GRP/FRP Gratings are produced by wet moulding and hot curing in a heated mould. The reinforcement consists of continuous fibreglass rovings in alternating layers, so the loads are distributed evenly in all directions. Regularly Moulded GRP Gratings have a polyester resin matrix. Glass content is approximately 35%. Standard colours are green, yellow or grey, other colours are available according to RAL.
Filament winding is a fabrication technique for creating composite material structures. The process involves winding filaments under varying amounts of tension over a male mouldor mandrel. The mandrel rotates while a carriage moves horizontally, laying down fibres in the desired pattern. The most common filaments are carbon or glass fibre and are coated with synthetic resin as they are wound. Once the mandrel is completely covered to the desired thickness, the mandrel is placed in an oven to solidify (set) the resin. Once the resin has cured, the mandrel is removed, leaving the hollow final product.