Manhole Lid and Frame Comparison: D400 Options for Road and Infrastructure Projects

Side-by-side specifications

The 42 kg option is the closer fit for procurement teams that are organizing a larger count per 20-foot container. The 50 kg option is suited to buyers who need the stated 10-unit pallet format and are working with the larger circular assembly described for that option.

Where the options differ for purchasing

The weight gap matters during handling and warehouse planning. A 42 kg unit gives a lower per-piece handling weight than the 50 kg unit, while the 50 kg configuration is associated with a 10-unit pallet. Ask the logistics team to confirm lifting equipment, pallet positions, and storage capacity before placing a volume order.

Container planning also separates the two choices. The 42 kg option is listed at 576 pieces per 20-foot container, compared with 420 units for the 50 kg option. Use the matching count when estimating loading space, receiving labor, and the number of containers for a project quantity.

Both options use a circular ductile iron cover and frame with the EN124 D400 class. For a road or infrastructure project, match the selected assembly to the project schedule and installation drawings, then keep the same product configuration across the quantity calculation.

Which option fits your project?

Choose the 42 kg D400 option when container quantity and a lower stated unit weight are the main procurement considerations. It is a practical match for distributors and project buyers planning larger shipment counts in 20-foot containers.

Choose the 50 kg D400 option when the 10-unit pallet arrangement and its stated circular assembly dimensions are part of your order plan. This choice is useful for buyers who need to align palletized deliveries with a defined receiving layout.

Picture the receiving stage before approval: the 42 kg units arrive in a palletized shipment planned around 576 pieces per 20-foot container, while the 50 kg units arrive in 10-unit pallet groups with 420 units planned for a 20-foot container. Send the supplier your required quantity, pallet limits, container target, and installation drawing so the quotation uses the correct configuration.