Product Name: Manhole Covers & Frames, Gratings, Water Meter Boxes, Valve BoxesModel Number: CS SeriesPlace of Origin: ChinaFeatures: 1) Many kinds of materials and processing methods available: a) Grey iron b) Ductile iron c) Brass d) Aluminum e) Ordinary sand casting f) Resin sand casting g) Hand molding h) Machine molding 2) Standards: ASTM, DIN, EN, BS, JIS, ISO 3) Can be produced as per buyer\'\'s drawings and samples