sell ductile iron manhole covers

Speifications of the square manhole covers: 1 Standard:A15,B125,C250,D400,E600,F900 as per EN124 standard 2 Material:Ductile iron/gray iron 3 Sizes:could be all kinds 4 Type:round,square,triangle 5 Passed ISO9001:2008 6 We can manufacture according to clients' technical drawings or samples 7 Diameter:from 300mm to 1200mm 8 Weight:from 6.5kgs to 650kgs 9 Guarantee:Hebei Tengfeng Metal Products Co.,Ltd will replace any heavy duty castings that have been properly installed and broken in normal use,free of charge after receipt of the broken castings. More information is available upon receipt of your inquiry.