botou foundry Ductile iron Black bitumen finishing manhole cover 

1) Product information:
Manhole covers and gratings are manufactured for road construction, natural gas, water supply and drainage, telecommunications. Manhole covers and gratings should be smooth, no blisters, holes, distortion

or any other defects.
2) Material
Ductile Iron GGG500,or according to customers requirement
3) Designs
EN124 A15, B125, C250, D400, E600 and F900 or As per customers' drawings or samples
4) Processes:
A) Moulding boards
B) Green sand with hand moulding
5) Coating
Cold applied black bitumen Or without Coating or as per customers' requirement
6) Inspection:
Third party inspection available upon request