Moulded gratings craftwork
FRP/GRP GRATING is the abbreviation of fiberglass/glassfiber reinforced plastic grating. It is originated from theU.S.in 1970s. FRP grating is built with unsaturated polyester resin (orthophthalic, isophthalic, vinylester or bisphenol A) or phenolic resin as matrix and fiberglass roving (C-glass, E-glass, phenolic fiber and other) woven as reinforcing material, which are processed through mould cast integrally by heating and compressing. It is composed of a certain number of symmetrical lattices, with loading properties in both length and width direction.