Cast Iron Manhole Cover

Spheroidal Cast Iron Manhole Cover Feature: 

1--Execute Standard: Fit European EN124:1994 Standard;

2-More Safe :More Environmental,Good Anti-theft Technology by more than 50 procedures procedures strictly;

3-Higher Strength:Tensile Strength óS≧420MPa,Yield Strength óS≧300MPa,3 Times Higher than Gray Iron,Same as Low Carbon Steel;

4-Higher Tenacity: More than 10 Times of Gray Iron,Same as Medium Carbon Steel;

5-Good Plasticity:ductility Rate ≧7%,Same as High Carbon Steel;

6-Higher Corrosion Resistance:2 Times Work Life 2 Times  more than Gray Cast Iron, 5 Times more than Ordinary Steel Pipe.