Overhead Socket and Key Canister
Description
Overhead Socket and Key Canister
Keys and sockets are made of compact polyethylene, which is designed and manufactured from two parts of the door and body. For easy fixing of the installation of lighting and ceiling chandeliers, the can of the key and ceiling outlet are suitable.

Applications:
- Makes it easy to insert tunnel form forming of ceilings and walls seamlessly
- Concrete and sap are prevented from entering the canister
packing :
| Name | Depte | Packing (QTY) |
| Swich box 80 | 800 | 150 |
Overhead Socket and Key Canister – Seamless Electrical Housing for Ceilings and Tunnels
The Overhead Socket and Key Canister is a practical and durable component used in modern electrical installations, especially in concrete ceiling systems, tunnel forms, and prefabricated walls. Engineered from high-density compact polyethylene, this canister is manufactured in two integrated parts — the body and the cover — which provide strong resistance against impact, concrete pressure, and environmental stress.
Its primary purpose is to safely house electrical outlets, switches, or ceiling-mounted light sockets during the concrete casting process while ensuring that the integrity of the electrical fixture remains intact. This product facilitates faster, safer, and cleaner electrical installation in reinforced concrete structures.
Key Features and Benefits
- Durable Polyethylene Construction: Made from high-strength compact polyethylene that resists deformation, cracking, and penetration during concrete pouring.
- Two-Piece Design (Body and Lid): Provides quick and secure closure, making it easy to insert, fix, and retrieve electrical elements after casting.
- Seamless Integration in Tunnel Form Systems: Specifically designed for use in tunnel form or prefabricated mold systems, ensuring precise alignment and firm placement within ceiling or wall concrete panels.
- Prevents Ingress of Concrete or Mortar: The tightly sealed cover prevents unwanted entry of concrete or debris into the socket area, which often causes future maintenance issues.
- Compatible with All Electrical Fittings: Designed to accommodate standard switches, sockets, and ceiling light fixtures, making it suitable for residential, commercial, and industrial applications.
- Lightweight and Easy to Install: The product is lightweight and does not require specialized tools or adhesives. It is installed directly into the formwork before pouring concrete.
- Reusable in Certain Applications: While often designed as a single-use form element, in some cases the body can be reused depending on the casting method and removal process.
Typical Applications of Overhead Socket and Key Canister
This product is widely used in modern cast-in-place construction methods where electrical systems need to be integrated into structural concrete, particularly:
- Ceiling-mounted sockets and light fixture housings
- Switch boxes embedded in tunnel form concrete walls
- Electrical housing in modular or prefabricated systems
- Fast-track construction projects requiring minimal finishing work
- Installation of wiring access points in reinforced slabs
Whether used in residential high-rise buildings, commercial office spaces, or underground infrastructure, the Overhead Socket and Key Canister is a critical element in streamlining electrical system integration.
Why Use the Overhead Socket and Key Canister?
Integrating electrical components in concrete structures often poses challenges such as misalignment, difficulty in drilling, or unwanted concrete seepage. Using the Overhead Socket and Key Canister eliminates these problems by offering:
- Accurate positioning before concrete is poured
- Protection for internal wiring pathways
- No post-installation breaking or drilling of concrete surfaces
- Saves labor, time, and material by minimizing errors and corrections
This canister is especially beneficial in tunnel-forming systems where precision and speed are vital. Once the concrete is cured, the embedded canister allows for fast and efficient installation of switches, sockets, or ceiling electrical devices.
Product Specification and Packaging
| Product Name | Diameter (mm) | Quantity per Pack |
|---|---|---|
| Switch Box 80 (Socket Can) | 80 | 150 units |
Each unit is supplied in durable, stackable packaging that protects the canisters from dust, UV, and damage during transport or storage on-site.
Installation Tips
- Positioning: Fix the Overhead Socket Canister on the formwork in the precise location intended for electrical access.
- Secure the Lid: Ensure the cover is tightly closed to prevent ingress of concrete or moisture.
- Cable Conduits: Route conduit pipes through designated inlets or notches to guide electrical wiring efficiently.
- Casting Concrete: Pour the concrete over the formwork with the canister in place. The body holds firm and maintains its shape under pressure.
- Post-Curing Access: Once the formwork is removed and the concrete is cured, the cover is removed, exposing a clean, accessible housing for electrical connections.
Conclusion
The Overhead Socket and Key Canister is an indispensable solution for seamless, clean, and secure electrical outlet installations in concrete ceilings and walls. It saves time, reduces post-casting labor, and ensures that every light fixture, switch, or socket is installed exactly where it’s needed — with no structural compromise or rework.
Backed by robust materials and designed for modern tunnel form construction systems, this product is a must-have for electrical engineers, builders, and contractors working on high-performance concrete projects.
More and more detailed explanations:
Overhead Socket and Key Canister
The Overhead Socket and Key Canister is an essential component in modern concrete construction projects where electrical outlets, switches, or ceiling fixtures must be installed flush within cast concrete surfaces. Manufactured using high-density compact polyethylene, this canister consists of two separate parts: a durable body and a tightly fitting door (or lid). Together, they form a seamless housing that provides protection, stability, and accessibility for electrical elements during and after concrete pouring.
This product is specifically designed to simplify the installation process of lighting fixtures and ceiling-mounted electrical devices in tunnel-form and slab-ceiling structures. Its structure ensures resistance against deformation, infiltration of concrete, and long-term environmental exposure.
Key Features and Functional Advantages
- High-Performance Polyethylene Material: Constructed from compact polyethylene, the canister resists impact, heat, moisture, and chemical degradation. It retains its shape under the pressure of wet concrete and provides long-lasting service.
- Two-Piece Modular Design: The system comprises a rigid base and a snugly closing lid, ensuring easy insertion into formwork and protection of internal space during concrete casting.
- Concrete-Safe Housing: The seal between the body and lid prevents the ingress of concrete, cement slurry, or construction sap — avoiding blockages, deformation, or post-casting damage.
- Universal Electrical Compatibility: Designed to fit most industry-standard electrical fittings such as wall sockets, key switches, ceiling lights, and other electrical endpoints, reducing the need for modifications on-site.
- Ideal for Tunnel Form and Cast-in-Place Systems: The product integrates perfectly with tunnel-form systems and prefabricated concrete methods where precision, modularity, and efficiency are vital.
- Time-Saving and Cost-Efficient: Eliminates the need for chiseling or drilling concrete after casting to install sockets or switches, minimizing errors and additional labor.
- Lightweight and Easy to Handle: Due to its material composition, this canister is exceptionally lightweight and easy to fix into formwork by hand — no additional mounting tools or adhesives are required.
Primary Applications
The Overhead Socket and Key Canister is widely adopted in civil engineering and infrastructure projects where electrical installations must be embedded in concrete surfaces. Its most common applications include:
- Housing for overhead sockets and ceiling-mounted chandeliers
- Flush electrical boxes for tunnel form concrete walls and ceilings
- Modular switch boxes in prefabricated or precast concrete panels
- Concrete slab projects requiring integrated MEP (Mechanical, Electrical, Plumbing) elements
- Multi-storey buildings, hotels, commercial plazas, underground stations, and high-rise residences
Why Choose the Overhead Socket and Key Canister?
Traditional methods of placing electrical fixtures in concrete structures often result in post-casting damage, misalignment, and rework. The Overhead Socket and Key Canister eliminates such issues through:
- Precision Placement: Ensures sockets and keys are aligned exactly where needed before concrete is poured.
- Protection of Internal Wiring: Creates a dedicated and isolated space for future cable insertion or junction boxes.
- Clean Finishing: Prevents accidental intrusion of concrete, maintaining a clean internal cavity.
- Structural Integrity: Avoids post-casting interventions that may damage the slab or compromise its strength.
This system allows electricians and contractors to achieve better finish quality, reduced project timeframes, and reliable long-term electrical performance in concrete environments.
Technical Specifications and Packaging
| Product Name | Diameter (mm) | Packing (Qty/Box) |
|---|---|---|
| Switch Box 80 (Canister) | 80 | 150 Units |
All units are packed securely in industrial-grade boxes designed for bulk handling. Packaging ensures protection against dust, UV radiation, and moisture during transport and on-site storage.
Installation Instructions
To achieve optimal results, follow these professional installation recommendations:
- Pre-Casting Setup: Affix the canister firmly on the formwork surface at the desired location. Ensure it aligns with the electrical plan and conduit routes.
- Seal the Lid: Lock the cover tightly to prevent wet concrete from entering the internal space.
- Guide Conduits Accurately: Insert cable or PVC conduits through designated entry points or molded sleeves in the body.
- Concrete Casting: Proceed with standard concrete pouring. The canister maintains its shape and position under normal concrete pressure.
- Post-Curing Process: After formwork removal and curing, remove the lid to access the clean, intact socket cavity for electrical installation.
Conclusion
The Overhead Socket and Key Canister is an innovative solution for embedding electrical systems into structural concrete without compromising quality, speed, or safety. From ceilings in residential towers to tunnel walls in industrial complexes, it offers unmatched ease of use, reliability, and durability.
Its advanced two-part design, polyethylene resilience, and compatibility with tunnel form methods make it the product of choice for electrical engineers, project managers, and construction professionals aiming for modern, efficient, and clean electrical infrastructure embedded directly in concrete elements.






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