The D400 h638_186 ductile iron manhole cover is a high-resistance crowning device designed for installation in areas subject to heavy loads. Made of GJS-500-7 ductile iron in accordance with the EN 1563 standard, it guarantees a breaking load exceeding 400kN. The structure consists of a square frame optimized for anchoring to the foundation via perimeter flanges and holes for anchor bolts, and a cover equipped with anti-slip embossments. A distinctive technical feature is the internal “U” seat, which allows sealing the manhole against unpleasant odors by filling it with sand or similar materials. The precision of the beveled corners ensures a unique and stable insertion of the cover into the frame.
Technical features
Material: GJS-500-7 ductile iron (EN 1563)
External dimensions: 1100 x 1100 mm
Clear opening: 1000 x 1000 mm
Height: 80 mm
Weight: 145 kg
Load class: D400 (Breaking load > 400kN)
Company Certification: ISO 9001:2015
Surface: Anti-slip embossments for water runoff
Frame Construction Details
Continuous perimeter flange for maximum support base
Beveled corners for easy anchoring and holes for anchor bolts
Reinforcement ribs for structural stability
“U” seat for odor tightness
Cover Construction Details
Closed-bottom slots for lifting keys
Maximum interlocking depth to prevent oscillations
Area dedicated for customization of logos or text
Beveled corner for unique positioning
Dimensional identifier expressed in cm
* Images are purely indicative
User Benefits
High Load Capacity: The D400 class allows installation in road carriageways, parking lots, and stopping areas for heavy vehicles in total safety.
Odor barrier: The sealing system with a “U” seat is essential for improving environmental comfort in urban areas, blocking sewage fumes.
Silent Stability: The deep interlocking and unique positioning prevent the cover from moving or producing metallic noises when vehicles pass.
Weather Resistance: Ductile iron offers superior durability compared to grey cast iron, resisting impacts and corrosion more effectively.
Safe Surface: The design of the embossments is studied to guarantee grip for tires and pedestrians, favoring the runoff of rainwater.
Scope of application
The h638_186 manhole cover is ideal for use in carriageways, industrial areas, port areas, and logistics centers that require large access points (1 meter clear opening). It is particularly suitable for municipal sewage networks, technological inspection pits, and treatment plants located in areas open to traffic or near inhabited areas thanks to its odor-tight design.
Why Choose It
Choosing this product means opting for an ISO 9001:2015 certified item, designed in every detail to last over time. With a weight of 145 kg, the h638_186 model offers superior solidity compared to lighter versions, ensuring that the road crowning remains intact even under continuous mechanical stress. It is the right choice for those seeking maximum reliability for inspections of large conduits and a stable and professional installation.
FAQ
What is meant by "Clear Opening"?
Clear opening represents the actual free passage space (1000x1000 mm) once the cover is removed, essential for allowing the entry of operators or equipment into the manhole.
What are the closed-bottom slots for?
They are used for attaching lifting keys. The "closed bottom" prevents mud and debris from falling into the manhole, while also facilitating surface cleaning.
Is it possible to fix the frame to concrete?
Yes, the frame is equipped with specific holes for inserting anchor bolts, allowing direct mechanical anchoring to the concrete foundation for permanent stability.
Holity uses PayPal and credit transfer as methods of payment.
Credit Transfer
Paying by credit transfer the order will be handled only after a bank credit receiving confirmation. Payment must be made within 7 days from date of order. Go past the deadline, the order will be automatically canceled. The bank transfer purpose must necessarily bring the order number, the order date and client name. The products availability has to be judged only from the credited. The payment must 'be made payable to: ' NAMITI SRL '
PayPal
Selecting the type of PayPal payment, you will be redirected to a page on the PayPal site where in you can enter with your email address and password and make payment. Your financial data will not be shared with Holity but they will be handled directly by PayPal. In case of order cancellation or rejection by Holity, the amount will be refunded to your PayPal account and Holity will be not responsible for delays and / or damage during repayment.
Upon delivery of the goods the customer is required to inspect:
The number of packages delivered is as indicated in the transport document
The packaging is intact and not altered even in the closing strip
In case of tampering and / or breaks the customer will immediately challenge the shipment and / or delivery putting the word "SUBJECT TO INSPECTION FOR GOODS ....." (give reasons) on the delivery receipt from the courier.
The customer then must report any damage within 7 (seven) days of receipt of goods in the manner prescribed by the operator chosen for the expedition. In case the customer fails to collect within 2 (two) working days of the goods ordered and present in storage at the warehouses of courier and / or the Company due to the repeated inability to deliver to the address specified by the customer with the order, will return the goods to stores in Namiti Ltd., with charge to the account of charges for transport and storage of goods, the customer may request a new shipment of the goods, upon payment of these expenses and the new shipping cost.
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