... Standard:EN124 For drainage Name:Ductile Cast Iron Manhole cover and Gullies for Drainage SystemMaterial:ductile iron casting, grey iron ... , trianglePainting:Bitumen ,painting ,water-solubility painting We are professional manufacturer and exporter of metal products.our products are ductile cast iron ... manhole cover.cast iron manhole cover and gully grating,bollard,tree grate,bench legs etc.