Ductile Iron Manhole Cover
Ductile Iron Manhole Cover, customized with drawings and
samples
The main application areas of spherical ink manhole covers:
municipal roads, highways, communications, electricity, tap
water, communities, schools and other parks
Material: QT****7
Standard: EN****2
Pressure rating: A*5 C**0 D**0 E**0 F**0
Features of ductile iron manhole cover:
Good toughness. The impact value is similar to that of medium
carbon steel, more than *0 times that of gray iron.
Strong corrosion resistance. In the water spray corrosion test,
the corrosion amount in *0 days is only 1/*0 of that of steel
pipes and 1/*0 of that of gray iron pipes. The service life is
twice that of gray iron pipes and 5 times that of ordinary steel
pipes.
Good plasticity. The elongation rate is ≥7%, which is similar to
that of high-carbon steel, while the elongation rate of gray iron
materials is zero.
high strength. Tensile strength b≥**0MPa, yield strength
s≥**0MPa, which is the same as low-carbon steel and three times
that of gray iron materials.
The production process is automatic molding line, coated sand
casting, resin sand casting
Customization process: customer drawings and samples-review
drawings-mold making-production tooling-sample-test size-send
customer inspection-make-to-order production-cnc
processing-packaging-delivery
