Manhole Covers/Gully Gratings/Trench Covers/Grates Shijiazhuang Shunjinguangao Trade Co., Ltd. Base Info Specification:EN 124 standardCasting Method:Sand CastingCertification:ISO 9001:2000Material:Grey IronModel NO.:EN124Origin:Hebei, China Description Pre:Aluminium Die Casting Auto Parts Next:Bell-Type Furnace Base High Ni-Cr Alloy Casting Heat Resistant Stacking Baskets/Jigs/Grids