Cast iron manhole cover

squareA15B125

Product overview
Ductile iron recessed (infill) cover and frame for inspection chambers exposed to vehicle traffic. Designed to receive surrounding paving or flooring materials so the cover integrates visually with the pavement while providing a beavertail/hinged or removable access point suitable for vehicular loads.

Applications and shapes
Square, rectangular and circular recessed manhole covers and frames for sewer, drainage and utility access where aesthetic integration and vehicular resistance are required. Suitable for streets, plazas, pedestrian areas with occasional vehicle passage and urban roads depending on load class.

Key characteristics

• Infill depths: 34 mm and 60 mm (model dependent).
• One- or two-handle lifting options; some models with hinged/tilting cover for safer opening.
• Multi-part cover systems available for large openings to facilitate handling and installation.
• Possibility to add embossed logos, emblems or custom markings on the cover.
• Pavement integration design to avoid the visual impact of a plain cast iron plate.

Load classes / suitability

• Pedestrian (A15)
• Light vehicular traffic (B125)
• Urban vehicle traffic (C250)
• Heavy traffic / industrial roads (D400)

Product options (table)
Dimensions (cm): 30×30, 40×40, 50×50, 60×60, 70×70, circular D60 cm
Resistance / load classes: A15 (pedestrian), B125 (light vehicles), C250 (urban traffic), D400 (heavy traffic)

Technical specifications

• Material: ductile iron (recessed infill cover and frame).
• Available infill depths: 34 mm and 60 mm depending on model.
• Lifting: 1 or 2 lifting keys/handles depending on model and size; some models feature hinged operation.
• Typical clear opening examples: 250×250 mm, 350×350 mm, 400×400 mm, 440×440 mm, 500×500 mm, 530×530 mm, 600×600 mm, Ø600 mm (exact clear opening depends on selected model).
• Frame heights (examples): 35 mm, 70 mm, 80 mm, 100 mm (model dependent).
• Typical SKUs/examples: INZA TFCRD60 (circular, Ø600 mm clear opening, frame height 100 mm, infill 60 mm, class D400); INZA TFRB33 / TFRC33 (square 250×250 mm, frame height 35 mm, class B125 / C250); INZA TFR2C44 / TFR2D44 (square 400×400 mm, frame height 80 mm, class C250 / D400); INZA TFR2C55 / TFR2D55 (square 500×500 mm, frame height 80 mm, class C250 / D400).
• Compliance: load classes referenced to UNE/EN 124 where applicable.