Solid Lifting Eye Sleeve

Precast Concrete Embedded Lifting & Connection Component Product Brochure

1. Product Overview

The Solid Lifting Eye Sleeve, also known as Embedded Connection Sleeve or Formwork Tie Sleeve, is a critical pre-embedded hardware component specifically engineered for the prefabricated construction industry. Manufactured from high-strength Q235 cold-drawn steel, this solid cylindrical sleeve features an integrated T-handle or cross-bar structure, designed to be pre-embedded into concrete elements before pouring.

Its primary functions include serving as a secure anchor point for cranes lifting heavy precast concrete components, acting as a tensioning node for formwork systems, and functioning as a robust connection point for diagonal bracing or safety guardrails. This product ensures structural integrity, enhances construction efficiency, and guarantees worker safety on modern construction sites worldwide.

2. Product Parameters & Specifications

To ensure compatibility with international standards and diverse project requirements, we provide a full range of standard specifications. Custom sizes are available upon request.

3. Installation & Usage Instructions

Proper installation is crucial for the performance and safety of the sleeve. Please follow these steps:

• Positioning: Place the sleeve into the designated position of the mold before pouring concrete. Ensure it is perpendicular to the surface and properly aligned with the lifting hardware location.
• Fixing: For formwork applications, insert the T-handle or cross-bar to lock the sleeve in place or connect to tie rods. For lifting applications, ensure the internal thread is clean and undamaged.
• Concrete Pouring: Pour concrete carefully around the sleeve. Avoid using vibrators directly on the sleeve to prevent displacement or damage to the thread.
• Post-Curing: Once the concrete has cured and reached sufficient strength, remove any temporary locking pins or handles if applicable.
• Connection: Attach crane hooks, eye bolts, or tensioning tools to the internal thread. For diagonal bracing, screw in the corresponding threaded rod.

4. Application Scenarios

This versatile hardware is indispensable in various stages of precast concrete production and construction:

• Precast Component Lifting: Used as a primary lifting anchor for wall panels, floor slabs, beams, and columns, providing high-strength grip for crane operations.
• Formwork Systems: Acts as a tie rod socket for steel, aluminum, or timber formwork to maintain wall thickness and resist formwork pressure.
• Diagonal Bracing: Pre-embedded as a connection point for temporary diagonal bracing used during the erection of precast structures.
• Guardrail & Safety Systems: Serves as a robust anchor for safety guardrails, handrails, or fall protection systems installed on precast facades or rooftops.
• Modular Construction: Ideal for connecting modular building units or heavy MEP (Mechanical, Electrical, Plumbing) fixtures.

5. Safety Precautions & Compliance

• Load Limit: Never exceed the recommended safe working load (SWL) specified for the specific diameter. Consult engineering data for critical lifts.
• Inspection: Regularly inspect sleeves for cracks, thread stripping, or corrosion before use. Damaged components must be replaced immediately.
• Corrosion Protection: Ensure proper hot-dip galvanizing or coating is applied, especially in marine or corrosive environments.
• Compatibility: Verify thread type and size match the lifting hardware. Do not force mismatched threads.
• Personnel Safety: Only trained personnel should handle lifting operations. Use appropriate rigging gear (slings, shackles) rated for the load.
• Compliance: Ensure products comply with local safety regulations (e.g., OSHA in the US, EN 1990 in Europe) and project specifications.

6. OEM & ODM Customization Services

We offer full-spectrum OEM and ODM services to meet your exact project needs:

• Dimensional Customization: Tailor sleeve OD, ID, length, handle size, and thread pitch to your CAD drawings.
• Material Upgrade: Options include Q345B, stainless steel (304/316), or alloy steels for extreme environments.
• Surface Finish: Hot-dip galvanizing (HDG), powder coating, zinc-nickel plating, or parylene coating available.
• Thread & Connection: Metric, UNC/UNF, or custom locking threads. Optional welded handles or bolt-on handles.
• Brand & Mark: Laser engraving of logos, batch numbers, or safety warnings.
• Packaging: Custom wooden crates, anti-rust oil wrapping, or export-grade packaging with certification labels.

7. Why Choose Us?

• Precision Manufacturing: Utilizing cold-drawn technology for superior dimensional accuracy and surface finish.
• Quality Assurance: Strict QC process from raw material inspection to final shipment with 100% traceability.
• Global Experience: Proven track record supplying to PC factories and construction firms across North America, Europe, and Asia.
• Technical Support: Our engineering team provides CAD support, load calculation assistance, and on-site consultation.
• Competitive Edge: Factory-direct pricing with no middleman, ensuring the best value for your procurement budget.