Henan Elpha Formwork Co., Ltd.
Henan Elpha Formwork Co., Ltd.

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Aluminum Formwork System

- Tie Rod System

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Product Features

1. Integrated Load-Transfer System

The tie-rod aluminum formwork system integrates panels, walers, tie rods, bracing, and connectors into a unified structural system. Tie rods act as the primary load-resisting elements, directly transferring concrete lateral pressure through the waler system, ensuring overall stability during pouring.

 

2. High-Strength, Lightweight Panels

Formwork panels are manufactured from 6061-T6 aluminum alloy, combining low weight with high tensile and bending strength. This allows the tie-rod system to achieve high load capacity while maintaining easy manual handling and high reuse cycles.

 

3. Engineered Customization with High Standardization

The tie-rod system is fully customized through detailed engineering design to match specific wall thicknesses, floor heights, and structural layouts. Typically composed of ~80% standardized components and ~20% customized parts, the system requires no on-site cutting or modification, ensuring precision and consistency.

 

Attribute

  • High Dimensional Accuracy

    CNC-machined panels with single-panel dimensional deviation ≤ 1 mm. After assembly, wall verticality and flatness are controlled within ±4 mm, enabling fair-faced or thin-plaster concrete finishes and reducing rework.

  • High Load-Bearing Capacity

    Tie rods (Q235, tensile strength ≥ 375 MPa) combined with horizontal walers form a rigid load-transfer system, effectively resisting fresh concrete lateral pressure and eliminating blowout risk during pouring.

  • High Construction Efficiency

    Lightweight 6061-T6 aluminum panels (20–30 kg per panel) allow manual handling without heavy lifting equipment. Labor efficiency is 2–3× that of timber formwork, supporting ~5-day-per-floor cycles in high-rise projects.

  • Safe, Durable, and Fire-Resistant

    Aluminum alloy is non-combustible, corrosion-resistant, and dimensionally stable. The system provides consistent structural stability, safer site conditions, and compliance with construction fire-safety requirements.

Product Specifications

Component

Material

Elastic Modulus (N/mm²)

Poisson’s Ratio

Tensile Strength (N/mm²)

Yield Strength (N/mm²)

Density (kg/m³)

Webster Hardness (HW)

Aluminum Formwork Panel

6061-T6

70,000

0.33

≥260

≥240

2,700

≥15

Tie Rod / Steel Support / Waler / Pin / Wedge

Q235 Steel

206,000

0.3

≥375

≥235

7,850

≥28

Flat Tie

50Mn Steel

206,000

0.3

≥800

≥600

7,850

≥42

 

Element

Test Result (%)

6061 Standard Requirement (%)

Si (Silicon)

0.65

0.4 – 0.8

Fe (Iron)

0.33

≤0.7

Cu (Copper)

0.19

0.15 – 0.4

Mn (Manganese)

0.046

≤0.15

Mg (Magnesium)

1.14

0.8 – 1.2

Cr (Chromium)

0.094

0.04 – 0.35

Zn (Zinc)

0.024

≤0.25

Ti (Titanium)

0.02

≤0.15

Al (Aluminum)

Balance

Balance

Detail Display

The tie-rod aluminum formwork system is a classic and widely used aluminum formwork reinforcement solution. It uses tie rods and walers as the primary load-bearing components, combined with aluminum panels, walers, plastic sleeves, nuts, and washers. The tie rods pass through the aluminum formwork panels and walers to lock the system, while long and short diagonal braces are used to adjust verticality and flatness. After concrete pouring, the tie rods can be removed. The core function of the tie-rod system is to enable efficient assembly and dismantling of aluminum formwork with controllable construction quality. It is suitable for a wide range of building types, including high-rise residential buildings, apartments, and office buildings

 

  • Detail view of the tie rod assembly, highlighting the high-strength threaded rod, square bearing plates, and precision-machined nuts. The image emphasizes material quality, machining accuracy, and load-transfer functionality, demonstrating reliable force distribution and secure formwork tightening in the tie rod aluminum formwork system.

  • Close-up view of the tie-rod aluminum formwork system in operation, showing tie rods passing through the panels and locking onto steel walers to resist concrete lateral pressure. The image clearly demonstrates how tensile force is transferred from the formwork panels to the walers, forming a rigid and stable assembly that ensures accurate wall thickness, controlled deformation, and safe concrete pouring.

  • Finished concrete surface formed using a tie-rod aluminum formwork system, showing uniformly distributed tie-rod holes with consistent spacing. The precise hole alignment reflects controlled wall thickness, stable formwork bracing, and reliable resistance to concrete lateral pressure, while allowing standardized post-pour sealing for structural integrity and waterproofing.

  • The diagram illustrates a tie-rod formwork assembly used to resist concrete lateral pressure and control wall thickness during pouring. A threaded steel tie rod passes through a sleeve between two opposing formwork panels, while plastic cones define the concrete face and prevent bonding to the rod. Nuts and washers transfer tensile force to the walers (backing beams), which distribute loads across the panels, ensuring alignment, dimensional accuracy, and stable formwork during concreting.

Product Application

  • High-rise Residential Buildings & Apartments

    exceptional dimensional consistency, and stable structural performance across repetitive layouts. Its systemized design minimizes cumulative errors, reduces rework, and supports high-efficiency vertical construction under tight schedules.

  • Hotel、Office Building

    Aluminum formwork in hotel construction ensures high load-bearing reliability, precise geometry control, and uniform concrete finishes across complex structural zones. The system addresses key hospitality project pain points such as schedule pressure, quality consistency, and architectural tolerance demands in multi-floor commercial buildings.

  • Villa

    Aluminum formwork in villa construction enables high-precision wall, slab, and beam casting with clean, architectural-grade concrete surfaces. Its modular flexibility effectively handles irregular layouts and customized designs while maintaining construction efficiency and dimensional accuracy in low-rise residential projects.

  • Basement

    Aluminum formwork used in basement construction enables precise casting of slabs, beams, and columns with high dimensional accuracy and smooth concrete finishes. The rigid, systemized panels effectively control deformation under high concrete pressure, addressing common basement pain points such as misalignment, surface defects, slow cycle times, and labor-intensive rework in confined underground environments.

Aluminum Formwork Production Process

  • 1

    Robotic Data Reading & Profile Feeding

    Production data is automatically read by robotic systems, and aluminum profiles are accurately identified and fed into the production line.

  • 2

    Cutting

    Key components are positioned and cut to form initial panel structures in accordance with design specifications.

  • 3

    Entry into Automated Production Line

    Aluminum formwork components are transferred into the automated production line for standardized, continuous processing.

  • 4

    Punching

    Precision punching operations are carried out to create tie holes, pin holes, and connection interfaces.

  • 5

    Edge Milling and Deburring

    Panel edges are milled and polished to remove burrs, ensuring dimensional accuracy and safe handling.

  • 6

    Slot Millin

    Grooves and functional slots are machined to meet structural and assembly requirements.

  • 7

    Final Welding

    Structural welding is completed to ensure panel strength, rigidity, and long-term durability.

  • 8

    Shape Correction and Calibratio

    Panels undergo straightening and calibration to correct deformation and ensure flatness, alignment, and tolerance compliance.

Package & Shipping

  • Inspection & Bundling

    Finished panels are checked for quantity and condition, then stacked and banded by specification.

     

  • Protective Packaging

     Panels are palletized, shrink-wrapped, and reinforced to prevent damage, deformation, and moisture exposure during transport.

     

  • Staging & Dispatch

    Packaged formwork is labeled, staged for loading, and dispatched for container shipment according to delivery schedules.

After-sales Service

  • 1

    Technical Documentation & Drawings

    Complete system drawings, assembly layouts, and installation manuals are provided to ensure accurate on-site execution.

  • 2

    Installation Guidance

    Remote technical support and on-site guidance (when required) for formwork assembly, pouring sequence, and dismantling procedures.

  • 3

    Quality & Performance Support

    Assistance with dimensional checks, tolerance verification, and troubleshooting during initial pours to ensure system performance.

  • 4

    Spare Parts & System Optimization

    Timely supply of replacement panels and accessories, with optimization suggestions based on actual site feedback.

Any questions?
We got you.

This section addresses the most common inquiries to help you find answers quickly. If you don't see your question listed, please feel free to contact us.

  • The system resists fresh concrete lateral pressure through tie rods working in direct tension, transferring loads to double steel walers. This creates a predictable force path and allows higher concrete pour rates compared with flat-tie systems, making it suitable for high-rise and thick wall applications.

  • Tie-rod spacing is determined by wall thickness, pour height, and concrete slump. In residential high-rise projects, spacing is commonly 400–600 mm horizontally and vertically, engineered to control deflection while maintaining surface flatness.

  • After stripping, tie rods are removed while plastic or conical sleeves remain, forming a controlled penetration hole. These holes are sealed using non-shrink mortar or waterproof plugs to meet façade and basement waterproofing requirements.

  • Tie-rod systems provide higher load capacity and wider applicability, especially for thick walls and high concrete pressure. Flat-tie systems offer faster dismantling and no wall penetration but lower load tolerance. Tie-rod systems are preferred for high-rise, heavy concrete, and structural walls.

  • Wall thickness accuracy depends on tie-rod tightening consistency, waler stiffness, and workmanship. Proper torque control typically limits wall thickness deviation to ≤3 mm, which meets structural tolerances for most residential and commercial projects.

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