Choosing Hot Selling Square Frame and Round Cover 850*850 D400 To Algeria: Application Fit and Specification Checks

Start with your project requirements

Have these answers ready before you compare models:

• Required load class. Your project specification or the local authority should state which EN124 class the location needs. The product listing covers B125, C250 and D400 variants.
• Opening and frame size. Check that the chamber can take an 850mm x 850mm external frame and that a Ø600mm clear opening is large enough for access.
• Installation height. The listed frame heights are 70, 80 and 100. Confirm the unit and make sure the height suits your reinstatement detail.
• Cover shape. Decide whether the site drawings call for a round cover in a square frame or a fully square cover.
• Handling and logistics. Unit weight and the number of units per pallet and per 20ft container affect handling on site and how you plan shipments.

Listed specifications for the 850*850 square frame and round cover

All listed variants have an 850mm x 850mm external size and a Ø600mm clear opening. They are made of ductile iron.

The listing gives loading capacities of 12.5T, 25T and 40T for the B125, C250 and D400 standards respectively.

What the table means for selection

• Name versus variant. The product name says D400, but the specification table also includes B125 and C250 versions. When you request a quotation, name the exact load class, height and weight row you need. Do not rely on the product name alone.
• Three D400 options. The D400 rows differ in height (100 or 80), cover diameter (Ø640mm or Ø645mm) and weight (58kg, 50kg or 52kg). Ask the supplier which row they will supply and confirm that it matches your drawings.
• Lighter classes. The B125 and C250 rows are lighter and have more units per pallet. Choose them only if your project specification allows that class at the installation location.
• Packing data. Units per pallet and 20ft quantities are taken from the product listing. They do not confirm stock or lead time.

When this product may fit

The listing gives the intended use as infrastructure construction and municipal utility work. This product is worth considering if your project specifies:

• a round cover set in a square frame,
• an 850mm x 850mm external frame with a Ø600mm clear opening,
• ductile iron construction, and
• one of the listed EN124 classes (B125, C250 or D400).

The product name refers to Algeria. That reflects how the product is marketed. It does not confirm compliance with any national or municipal requirement in Algeria or anywhere else. Check local acceptance requirements with the project owner or the relevant authority.

When it does not apply

This product is not the right choice if your specification calls for:

• a load class above D400, such as E600 or F900, or the lighter A15 class, none of which appear in this product's listing;
• a fully square or rectangular cover instead of a round one; or
• a frame size other than 850mm x 850mm.

For these cases, the company's square manhole cover and frame range may be a better starting point. Its listing describes ductile iron GGG500-7 to the EN124 standard and classes A15, B125, C250, D400, E600 and F900. It lists sizes from 300\300 to 1200\1200 and several shapes: round, round with square frame, rectangle and square. It also lists an asphaltic coating, black colour, a bottom frame style and pallet packing for long sea transportation. Its published specification table shows specific size and class combinations, for example 700\*700 EN124 D400 at 61kg. Check that the exact size, class and shape combination you need is available before relying on it. One row in that table reads "EN125 C250", which should be confirmed with the supplier.

Points to confirm before ordering

The product materials do not include prices, delivery times, certificates or test reports. Before you place an order, ask HEBEI YONGQIAN TRADING CO.,LTD. for:

1. the exact specification row to be supplied (class, cover diameter, height and weight);
2. the unit used for the listed height values;
3. the material grade, coating and finish for this specific product;
4. any certificates or test documents your project requires;
5. pricing, minimum order quantity and lead time; and
6. packing details for your shipment.

For product and company information, visit www.hbyqmetal.com, and confirm specifications and purchasing requirements directly with the company.