Steel Formwork For Tunnel Lining

For detailed information, please purchase Steel Formwork For Tunnel Lining from Xinhuixing Factory in China. With over a decade of expertise in underground engineering formwork systems, Xinhuixing operates as a professional China manufacturer integrating R&D, production, and export services. Our Tunnel Lining Steel Formwork is designed for secondary lining construction in complex underground geological conditions. By combining Q355B high-strength steel, fully hydraulic demolding systems, and modular assembly design, we deliver a highly stable, precise, and efficient solution for modern tunnel engineering projects.

What is a Steel Formwork For Tunnel Lining?

Steel Formwork For Tunnel Lining is a specialized reusable steel mold system used for secondary lining concrete construction in tunnels. It is widely applied in metro systems, railway tunnels, water diversion tunnels, and underground infrastructure. The system ensures precise geometric shaping, high structural stability, and excellent concrete surface quality under complex geological and high-pressure conditions.

Core Features and Technical Advantages

Precision forming for fair-faced concrete: CNC bending and integral welding technology ensures panel thickness of 6–8mm with superior rigidity. After casting, concrete surfaces achieve smooth finish without honeycombing or pitting, eliminating the need for plastering and reducing post-construction labor by over 30%.

High compressive strength design: Structural load capacity reaches 80 kN/m². Combined with double waterproof sealing strips, it withstands groundwater pressure above 1.0 MPa, ensuring stability in fault zones, soft rock areas, and water-rich geological conditions.

Hydraulic intelligent demolding system: Multi-point synchronous hydraulic system enables one-touch demolding of side and top forms, reducing cycle time to approximately 40 minutes and improving tunnel construction efficiency significantly.

High durability and anti-corrosion system: Epoxy zinc-rich coating ensures 1,000+ hours salt spray resistance. The system supports 80–120 reuse cycles, with steel fully recyclable after service life, significantly improving cost efficiency.

Precision assembly system: Joint accuracy ≤1mm and panel flatness within ±0.5mm ensure compliance with GB/T 17656-2018 standards for concrete formwork steel.

Product Applications

Urban metro systems: Shield tunnel secondary lining for circular and horseshoe sections with full-ring casting capability.

High-speed railway tunnels: Large-scale mountain tunnels such as complex geological zones with shallow burial and high-risk conditions.

Water conservancy tunnels: Deep-buried and high-pressure diversion tunnels with strong impermeability requirements.

Special environments: Coastal humidity, plateau cold regions, and high groundwater pressure tunnel systems with customized coatings and thermal joint protection.

Comparative Advantages

Compared with traditional wooden or standard steel tunnel formwork, Xinhuixing Steel Formwork For Tunnel Lining offers significantly higher precision, structural stability, and service life.

It reduces labor cost by over 30%, increases construction efficiency through hydraulic automation, and provides superior waterproof and deformation resistance in extreme geological environments.

The system also supports green construction requirements by reducing material waste and improving concrete utilization efficiency.

Why Choose Xinhuixing Steel Formwork For Tunnel Lining?

Xinhuixing is a trusted China manufacturer with integrated production capability including CNC machining, hydraulic system integration, welding, and anti-corrosion treatment.

All products undergo strict 1:1 pre-assembly inspection, dimensional accuracy testing, and load performance verification. We comply with GB/T 17656-2018 standards and provide full quality documentation and third-party inspection reports.

Our Steel Formwork For Tunnel Lining have been widely used in metro, railway, and water conservancy tunnel projects across China, proven in complex geological environments with stable performance and high construction reliability.

We also provide full technical support including installation guidance, hydraulic system operation training, and tunnel construction optimization suggestions.

Maintenance

Cleaning: Remove concrete residue immediately after demolding using flat scrapers. Avoid damaging anti-corrosion coating.

Inspection: Check bolts, welds, sealing strips, and deformation before each use to ensure structural integrity.

Repair: Use correction platforms for deformation adjustment and repair damaged welds promptly.

Storage: Store in dry, ventilated warehouses with elevated base support (≥20cm), apply anti-rust oil, and protect from moisture and sunlight.

Environmental and Safety Features

Each set replaces approximately 200㎡ of wooden formwork, significantly reducing deforestation and construction waste. Concrete waste is reduced by more than 10% compared with traditional systems, supporting LEED and green building certification requirements.

Safety systems include lifting lugs, anti-slip steps, and platform interfaces to improve high-altitude operation safety and reduce construction risks in tunnel environments.