Galvanised steel manhole cover

squareD400A15

Overview
Watertight plain anti-slip manhole cover and frame from the INZA TGA series, designed for inspection chambers. Manufactured in galvanised steel with an EPDM gasket and four‑screw corner closure to ensure odour‑tight sealing. Manufacturing lead time: 1 week. Delivery included in the price.

Main features

• Material: galvanised steel with 5 mm anti‑slip top plate.
• Watertight closure: four corner screws combined with an EPDM rubber gasket for odour prevention.
• Anti‑slip surface: patterned 5 mm galvanised steel top for pedestrian safety.
• Convenient opening: threaded removable handles screw into screw housings; handles and tools for screw removal supplied.
• Available load classes: pedestrian A15, light vehicular B125, urban vehicle C250; reinforced options up to D400 and higher on request.
• Variants: standard square sizes and reinforced versions suitable for vehicle traffic; assisted opening (gas piston) available for large/heavy covers.

Dimensions & variants

• Standard square external dimensions from approx. 300×300 mm up to 1000×1000 mm (common examples: 315×315, 415×415, 515×515, 615×615, 715×715, 815×815, 915×915, 1015×1015 mm).
• Typical internal/opening dimensions follow the external size (examples: ext. 315×315 → int. ≈237×237 mm; ext. 415×415 → int. ≈337×337 mm). Standard height: typically 70 mm for listed variants.
• Example model references: INZA TGA30C, TGA40C, TGA50C, etc. (models vary by class and size).

Included accessories

• Opening key and tools to remove the four screws (included in the price).
• Two removable threaded handles to assist lifting (included).

Other options

• Round covers and special/custom sizes on request.
• Assisted opening (gas pistons) for larger/heavier covers.
• Special reinforced designs for very high loads available on request.

Technical specifications

• Material: galvanised steel.
• Top plate thickness: 5 mm (anti‑slip patterned plate).
• Seal: EPDM rubber gasket (watertight / odour‑tight).
• Closure: four corner screws (screw housings accept threaded handles).
• Standard height: 70 mm (typical).
• Load classes available: A15, B125, C250; D400 and higher on request.
• Dimension range: approx. 300×300 mm to 1000×1000 mm (external).
• Manufacturing lead time: approx. 1 week. Delivery included.