玻璃钢排水格栅是指以玻璃钢为原材料的用于地面排水使用的板材，它是一种采用高强度玻璃纤维长丝做增强材料，以不饱和聚酯树脂（包括间苯型、邻苯型、乙烯基型和酚醛型、双酚A 型等）为基体，以玻璃纤维粗纱（缠绕或拉挤、中碱或无碱）为骨架，在大型金属模具上同时铺敷玻璃纤维无捻粗纱，浇铸热固性树脂，然后一次冷固化成型，脱模后即可。
FRP drainage grille is a kind of plate used for ground drainage with FRP as raw material. It uses high strength glass filament as reinforcing material, unsaturated polyester resin (including m-benzene, o-phenyl, vinyl, phenolic and bisphenol A) as matrix, and glass fiber roving (winding or bisphenol A) as matrix. Pultrusion, neutral alkali or alkali-free) is the skeleton. Glass fiber Twistless roving is laid on the large metal mould at the same time. Thermosetting resin is cast. Then it is cold-cured once and can be demoulded.