Composite bmc sewer drain gully grating Product models jq-g series Production technology compression molding Materialcomposite bmc Net weight * Loading class c250 b125 a15 Hinged&gaske no Clear opening 250mm to 750mm Working temperatur -50-200 Cover diameter 300mm to 750mm Test approval ce sgs Shape rectangular Service life >15 years Lock style screw Withoutwarranty 1 years Color optional Place of origin quanzhou , china Advantages of composite bmc sewer drain gully grating : 1, higher stretch resistance and bend resistance , comply with en 124-1:2015, en 124-5:2015 . 2, anti-theft , no cycle value . 3, light-weighted 4, durable service life 5, anti-corrision , anti-slip 6, uv-proof and v0-flammability rating 7, insulation 8, free design