Precast Concrete Lifting Systems
Sandwich Panel Connector Butterfly Plate
A forged steel butterfly plate connector used to anchor the inner and outer concrete layers of insulated precast sandwich panels. It maintains spacing across the insulation layer, transfers shear and tensile loads reliably, and minimizes thermal bridging. Available in 6T to 12T capacities with lengths from 146mm to 203mm, it is designed for use in vertical and horizontal wall systems during factory casting or site erection.
- Material
- High-quality forged alloy steel
- Finish
- Plain finish, Electrogalvanized, Hot-dip galvanized
- Standard
- Meets international safety and performance standards
- Catalogue Family
- Precast Concrete Lifting Systems
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Sandwich Panel Connector Butterfly Plate Gives You
- Forged alloy steel construction provides high tensile strength and impact resistance for structural integrity
- Butterfly plate shape ensures firm anchorage in both concrete layers and resists pull-out under load
- Maintains consistent spacing between inner and outer panels to preserve insulation performance
- Minimizes thermal bridging by reducing heat transfer across the connector body
- 3:1 safety factor ensures reliable performance under heavy lifting and dynamic loading
- Compatible with insulated sandwich panels in both factory-cast and site-erected applications
- Designed for use in curtain walls, steel structures, and bridge engineering where load transfer is critical
Application Scenarios
Where Sandwich Panel Connector Butterfly Plate Is Used
- Lifting and handling precast sandwich wall panels during transport from factory to construction site
- Installing large precast façade panels in high-rise buildings where thermal performance and structural stability are required
- Connecting structural layers in modular precast building systems with insulation between layers
- Securing non-load-bearing and load-bearing wall elements in bridge and infrastructure projects
- Erecting panels on-site where precise alignment and load transfer across insulation are essential
Who It Is For
Buyers This Product Is Built For
- Precast concrete manufacturers producing insulated sandwich panels for commercial and residential buildings
- Construction contractors specifying precast wall systems with thermal insulation and load-bearing capacity
- Architectural fabricators integrating precast façades into steel and concrete structures
- Bridge and infrastructure engineers requiring reliable connectors in insulated panel systems
- Project managers sourcing a single supplier for multiple precast accessories including connectors and lifting hardware
Problems It Solves
Problems This Product Removes
- Loss of structural integrity during lifting or handling due to weak or inadequate anchoring between concrete layers
- Thermal bridging through metal connectors compromising the insulation performance of sandwich panels
- Panel separation or delamination during transport or erection caused by insufficient load transfer
- Need to source multiple connectors from different suppliers for different panel thicknesses and load capacities
- Inconsistent spacing between inner and outer layers leading to insulation voids and reduced energy efficiency
- Lack of traceability and certification for connectors used in critical structural applications
Technical Features
Technical Features
- Forged alloy steel body for high tensile strength and durability
- Butterfly-shaped plate design for improved anchorage and shear resistance
- 3:1 safety factor with minimum breaking load three times the safe working load
- Maintains precise spacing between inner and outer concrete layers during casting
- Designed to minimize thermal bridging in insulated sandwich panel systems
- Available in multiple sizes with load capacities from 6T to 12T and lengths from 146mm to 203mm
- Stamped working load limit and material grade on the connector for traceability
- Compatible with both factory-cast and site-erected precast panel systems
Specifications
Sandwich Panel Connector Butterfly Plate Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity Range | 6T to 12T safe working load |
|---|---|
| Material | Forged alloy steel |
| Safety Factor | 3:1 minimum breaking load to safe working load |
| Length Range | 146mm to 203mm |
| Width Range | 100mm to 125mm |
| 6T Dimensions | Length 178mm Width 100mm |
| 9T Dimensions | Length 146mm Width 106mm |
| 12T Dimensions | Length 178mm Width 120mm |
| 12T Dimensions | Length 203mm Width 125mm |
| Surface Finish | Plain finish electrogalvanized or hot-dip galvanized |
| Standards | Meets international safety and performance standards |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- High-strength forged alloy steel for tensile strength and resistance to deformation
- Electrogalvanized or hot-dip galvanized coating for corrosion resistance in outdoor and humid environments
- Plain finish for applications where coating is not required or where bonding to concrete is prioritized
Manufacturing Process
How This Product Is Made
1Forging of steel blanks to shape the butterfly plate and anchor ends
2Heat treatment to enhance strength and toughness of the forged component
3Machining of anchor ends and holes to precise dimensions
4Surface treatment including electrogalvanizing or hot-dip galvanizing
5Stamping of safe working load and material grade for traceability
6Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches to verify 3:1 safety factor
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm minimum three times the safe working load
- Visual inspection for forging defects, cracks, or coating irregularities
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the connector body
- Private label and OEM marking available
- Surface finish to order: plain, electrogalvanized, or hot-dip galvanized
- Custom sizes and dimensions built to a supplied drawing
- Packing configuration tailored to carton or pallet requirements for export or warehouse use
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Welded steel connector | Forged steel offers higher tensile strength and impact resistance, with better fatigue performance under repeated loading |
| Cast steel connector | Forged steel has superior grain structure and strength; cast connectors are more prone to internal defects and lower fatigue life |
| Standard bolted plate | The butterfly shape provides better anchorage and shear resistance in both concrete layers compared to flat plates |
| Stainless steel connector | Carbon or alloy steel with galvanizing offers higher strength and cost efficiency; stainless is used only when corrosion resistance is the primary requirement |
Use Guide
How To Use And Inspect Sandwich Panel Connector Butterfly Plate
- Verify the stamped safe working load matches the calculated load for lifting or structural transfer
- Ensure the connector is fully embedded in both the inner and outer concrete layers during casting
- Do not exceed the 3:1 safety factor under dynamic or shock loading conditions
- Inspect for coating damage or deformation before use, especially after handling or storage
- Use only in applications where the insulation layer is properly maintained and continuous
- Retire the connector if the plate shows bending, the anchor end is deformed, or the marking is unreadable
Related Products
Often Ordered With This Item
Double-Headed U-Shape Lifting Anchor
Spherical Head Anchor with Collar for Precast Concrete
Utility Lift Anchor for Precast Concrete
Rubber Recess Former for Spread Anchor (Split Type)
Rubber Recess Former with Threaded Rod & Wing Nut for Lifting Anchors
Magnetic Recess Former for Swift Lift / Pin Anchors, Magnetic Void Former
Spherical Head Lifting Anchor
Lifting Eye Anchor / Dogbone for Precast Concrete
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Guides Worth Reading Before You Order
Answers
Sandwich Panel Connector Butterfly Plate FAQ
What is the safety factor for these connectors?
A standard 3:1 safety factor, so the minimum breaking load is three times the stated safe working load.
Can you provide Material Test Certificates?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with each order upon request.
Are custom sizes available?
Yes. Custom lengths, widths, and capacities can be built to a supplied drawing or specification.
What surface finishes are available?
Plain finish, electrogalvanized, or hot-dip galvanized. Custom finishes can be arranged.
Can the working load limit be stamped in a different tonnage?
Yes. Custom tonnage stamping is available for private label or OEM requirements.
How are they packed for export?
Standard carton and pallet packing. We can configure the carton count and pallet pattern to match your warehouse or shipping needs.
Which standards do these connectors meet?
They are designed to meet international safety and performance standards for precast concrete connections.
Need A Quote On Sandwich Panel Connector Butterfly Plate
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