Formwork Combin Nuts are high-precision fastening components engineered to provide a robust and secure connection between formwork panels and tie rods. These critical components ensure the structural integrity and desired shape of concrete forms, preventing misalignment or deformation during the high-pressure process of concrete pouring and curing.
Manufactured using advanced ductile cast iron technology and conforming to ISO 9001 standards, our combin nuts are designed for maximum load-bearing capacity and durability. By integrating professional thread rolling and specialized nodulizing processes, we deliver a product that combines exceptional strength with long-term reusability for large-scale construction projects.
Detailed Parameters
| Material Grade | Ductile Cast Iron JIS FCD450/500 | Loading Capacity | More than 180KN |
|---|---|---|---|
| Standard Sizes | D15/1710mm, D20/2210mm | Base Diameter | 90110mm to 140mm |
| Surface Treatment | Nature / Yellow Galvanized / Silver Galvanized | Unit Weight | 0.96kg - 1.38kg |
| Certification | ISO 9001 Certified Foundry | Packaging | Bags / Pallets / Wooden Cases |
| Application | Formwork Tie Rod System | Manufacturing | Ductile Iron Casting & Thread Rolling |
Key Advantages
Superior Strength
Utilizing JIS FCD450 ductile iron ensures the nuts can withstand extreme lateral pressure without failing.
Rapid Installation
Precision thread rolling allows for fast tightening and loosening, significantly reducing labor time on site.
High Durability
Corrosion-resistant galvanized coatings protect the components from harsh outdoor and humid environments.
Precision Fit
Exact tolerances ensure a seamless connection with tie rods, maintaining perfect concrete dimensions.
Enhanced Safety
Engineered to distribute pressure evenly, reducing the risk of formwork collapse or panel shifting.
Cost Efficiency
High-strength material and robust design allow for multiple reuses across different construction phases.
Product Gallery
Management Platforms
Material Sourcing
Strict selection of carbon and silicon contents to ensure high graphitization and nodulizing ability.
In-Ladle Treatment
Advanced magnesium-ferromagnetic processing to achieve spheroidal graphite structure in ductile iron.
Thread Rolling
Specialized mechanical thread rolling for ductile iron to ensure maximum torque resistance.
Quality Control
Severe quality measures applied at every stage to meet international construction standards.
ISO Certification
Production managed under ISO 9001 systems for consistent quality and process reliability.
Custom OEM
Flexible manufacturing capabilities to meet specific customer designs and size requirements.
Investment Return Comparison
| Feature | Standard Combin Nuts | Low-Grade Alternatives |
|---|---|---|
| Material Strength | High (JIS FCD450) | Moderate (Grey Iron) |
| Reuse Cycle | High (Multiple Projects) | Low (Frequent Replacement) |
| Installation Speed | Rapid (Precision Thread) | Slow (Irregular Thread) |
| Safety Risk | Minimal (Stable Load) | Higher (Potential Slippage) |
| Long-term Cost | Lower (Durability) | Higher (Replacement Costs) |
Frequently Asked Questions
Our combin nuts are manufactured from high-grade ductile cast iron, specifically JIS FCD450/500, which provides the necessary strength and flexibility to withstand extreme construction pressures.
Combin nuts are specifically designed for the tie rod system, offering better load distribution and faster installation compared to traditional hex nuts, ensuring the formwork remains stable during concrete pouring.
We offer several options including nature finish, yellow galvanized, and silver galvanized coatings to protect against corrosion in high-humidity or outdoor environments.
They are designed for standard formwork tie rod systems. We provide various standard sizes (e.g., D15/17, D20/22) and also offer OEM services for custom designs.
Our high-quality ductile iron combin nuts typically feature a loading capacity of more than 180KN, making them suitable for high-rise and heavy-duty concrete projects.
To ensure safe delivery, we use professional exporting packaging including big woven bags, wooden pallets, or sturdy wooden cases depending on the order volume.
