round sand casting ductile iron manhole cover and frame
ISO9001:2008
Material:ductile iron
Process:sand casting
OEM casting

round sand casting ductile iron manhole cover and frame

1)Material:grey iron,ductile iron by vacuum casting,sand casting,lost foam casting or CNC machining

2)Weight:5-1000kgs
3)Process:sand casting,vacuum casting and lost foam casting

our advantage:

1) strong enginnering team make high quality

2) OEM service in casting

3) ISO9001:2008 quality control

4) all standard and special size are available with drawing

5) own test equipment and  professional casting mould development

6) perfect service

7) OEM supplier,we have a foundry and a machining shop.