FRP / GRP Tanks FRP / GRP Tanks Alfa plast is One of the leading manufacturing company for fiberglass piping located in Pune Maharashtra (India). Fiberglass Piping was first used in the crude oil production industry as a solution to corrosion problems. During the mid-50’s developments in manufacturing with polyester and epoxy resins resulted in the application of fiberglass tanks and piping in the chemical industry. FRP (Fibreglass Reinforced Plastics, also known as GRP, or Glass Reinforced Plastics) is a modern composite material of construction for chemical plant equipment like tanks and vessels. Chemical equipment that range in size from less than a metre to 20 metres are fabricated using FRP as material of construction.