13/11/2015
The difference of FRP and SMC Manhole cover ?
1. Material is different , the price is not the same .SMC material price more than twice as FRP .
2.Molding process is not the same: SMC must use large hydraulic machinery, metal molds, high temperature high pressure curing one-time hot; FRP process is the use of traditional wooden mold, with the hand lay-mode production, natural drying releasing molding.
3.Product quality is not the same: SMC products from the surface to the back is a kind of material, heat curing temperature and high pressure, high density, high strength, quality and reliable; FRP products are divided into multiple levels gelcoat, fiberglass cloth, wood, etc., by hand lay-up molding process, influenced by the quality of workers and the weather is large, unstable quality.
