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Ductile iron Manhole Cover

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November 12, 2025
Category Connection: Cast Iron Gully Cover
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Tags:
#cast iron gully grate #cast iron gully grid #cast iron road gully
Brief: Discover the 500x500mm Ductile Iron QT500-7 Gully Grate, a high-performance drain cover with 140KN load capacity and rubber gasket. Perfect for heavy-duty environments, this anti-settling cast iron grate offers superior drainage, corrosion resistance, and modern aesthetics.
Related Product Features:
  • Made of ductile iron QT500-7, complying with GB1348 standards for durability.
  • Minimum 140KN load capacity, suitable for heavy-duty applications.
  • Flat and smooth surface finish with no cracks or defects.
  • Grate and well ring connected by pin with ≥120° flip angle for easy access.
  • Single coat of asphalt varnish for enhanced corrosion protection.
  • 83.3% drainage area, more than twice the capacity of traditional cast iron.
  • Hot-dip galvanized for rust resistance and minimal maintenance.
  • Hinged anti-theft design ensures security and easy installation.
Faqs:
  • What is the load capacity of the 500x500mm Ductile Iron Gully Grate?
    The 500x500mm Ductile Iron Gully Grate has a minimum load capacity of 140KN, making it suitable for heavy-duty environments.
  • How does the anti-settling feature work?
    The flange surface transfers load to the pavement layer, reducing well sinking and protecting surrounding asphalt from water accumulation.
  • What are the corrosion protection measures for this gully grate?
    The grate features a single coat of asphalt varnish and hot-dip galvanization for superior rust resistance and minimal maintenance.
  • What applications is this gully grate suitable for?
    This gully grate is ideal for non-motorized lanes, residential areas, parking lots, secondary roads, and other heavy-load environments.
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