Product Name: Anti-Theft D400 SMC Composite Manhole Cover with Hinge Model NO.: jjy-mc-1 Type: Polyester FRP Fiber Type: GFRP Material: SMC Molding Method: Resin Transfer Molding Product Categories: SMC Products Usage: Environmental Protection Trademark: JJY Transport Package: Film Packing with Pallet Specification: SGS, ISO Origin: China HS Code: 392590000 Product Description SMC/FRP EN124 Composite Manhole CoverMobile :+8618301691557:+86183016915571, Anti-theft: cover and base frame integrate connection, hinge-type opening, sledgehammer hit not break it, completely anti-theft.2,Loading Ability: the toughness of ductile iron is fourfold that of ordinary cast iron, close to steel materials, suitable for all kinds of road use!3,Corrosion resistent: Sewer internal environment complex, filled with various chemical substances, ductile iron does not suffer chemical corrosion, service life more than 30 years.4 ,Opens conveniently: light weight, single unarmed can be open, convenient downhole maintenance!5,Superior safety performance: It often occurred underground explosion accident, fly up covers scarred passers-by ,manhole covers integration connections will not depart from the ground.