Flattened Sleeve (Twisted Sleeve Connector)

Precast Concrete Embedded Fastening Component Product Brochure

1. Product Introduction

The Flattened Sleeve, also known as Twisted Sleeve Connector or T-handle Socket, is a high-strength, hot-dip galvanized fastening accessory specifically engineered for the prefabricated construction industry. Designed to provide robust anchorage and tensioning capabilities, this component serves as a critical embedded connection point in precast concrete elements.

Its unique twisted and flattened geometry allows for superior grip and resistance to shear and tensile stresses during the concrete casting process and subsequent structural assembly, making it an indispensable component in industrialized precast construction.

2. Product Parameters & Specifications

Customizable dimensions are available upon request to meet specific project requirements.

3. Installation & Usage Instructions

• Pre-embedding: Prior to concrete pouring, securely embed the sleeve into the designated position of the precast concrete formwork. Ensure the sleeve is firmly fixed and aligned with the design axis.
• Thread Engagement: For threaded versions, screw the corresponding bolt or rod into the sleeve. The twisted flattened section provides mechanical locking to prevent rotation and slippage.
• Tensioning: Utilize the integrated T-handle or an external wrench to apply torque for tensioning. Commonly used for bracing systems or tie-rod connections in formwork.
• Post-casting: After the concrete has cured and the formwork is stripped, the sleeve remains embedded, ready for final structural connections such as guardrail installations or secondary bracing.

4. Application Scenarios

• Precast Concrete Component Manufacturing: Essential for embedded connection points in precast walls, floors, and columns.
• Formwork Systems: Widely used as tie-rods or tensioning anchors for steel, aluminum, and wood formwork to maintain mold integrity during concrete pouring.
• Diagonal Bracing Connections: Serves as a reliable anchor for temporary diagonal bracing systems in precast yards or on-site assembly.
• Guardrail & Safety Systems: Used as pre-embedded sockets for safety guardrails, handrails, or fall protection systems in industrial and construction sites.
• Modular Construction: Ideal for connecting modular building components where high tensile and shear resistance is required.

5. Safety & Precautions

• Corrosion Resistance: Although hot-dip galvanized, avoid prolonged exposure to highly corrosive environments without additional protective coatings. Regular inspection is recommended in coastal or chemical plant areas.
• Load Capacity: Do not exceed the recommended tensile or shear load limits specified by the engineering design. Overloading may lead to structural failure.
• Installation Integrity: Ensure the sleeve is fully and correctly embedded in the concrete. Inadequate embedding can result in pull-out failure.
• Handling & Storage: Handle with care to prevent damage to the galvanized coating. Store in a dry, ventilated area to prevent oxidation.
• Compatibility: Verify thread type and dimensions match the connecting hardware before installation to prevent cross-threading or misalignment.

6. OEM & ODM Customization Services

We offer comprehensive OEM and ODM services to meet the specific requirements of global clients.

• Custom Dimensions: Tailored outer diameter, inner diameter, length, and T-handle size to fit your unique project drawings.
• Material Selection: Options include Q235B, Q345B, stainless steel 304/316, or special alloy steels.
• Surface Finish: Options include Hot-dip Galvanizing (HDG), powder coating, zinc plating, and DACROMET.
• Thread & Connection Types: Customizable metric threads, UNC/UNF threads, or specialized locking mechanisms.
• Logo & Marking: Laser engraving or stamping of company logo, batch number, or technical specifications.
• Packaging: Custom-branded packaging, anti-corrosion wrapping, and export-compliant wooden crates.

7. Why Choose Us?

• Industry Expertise: Extensive experience in the prefabricated construction hardware sector with over a decade of manufacturing experience.
• Quality Assurance: Strict adherence to ISO 9001 quality management systems. Full traceability from raw material to finished product.
• Global Supply Chain: Efficient logistics network ensuring timely delivery to North America, Europe, Asia, and Africa.
• Technical Support: Dedicated engineering team available for technical consultation, CAD drawing support, and on-site guidance.
• Competitive Pricing: Direct-from-factory pricing without middlemen, offering the best value for bulk orders.