Ductile Iron Manhole Cover

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: QT500-7

Standard: EN124-2

Pressure rating: A15 C250 D400 E600 F900

Features of ductile iron manhole cover:

Good toughness. The impact value is similar to that of medium carbon steel, more than 10 times that of gray iron.

Strong corrosion resistance. In the water spray corrosion test, the corrosion amount in 90 days is only 1/40 of that of steel pipes and 1/10 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 ób≥420MPa, yield strength ós≥300MPa, 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