Prefabricated Stair Steel Formwork

Precast Concrete Stair Molding System Product Brochure

1. Product Introduction

The Prefabricated Stair Steel Formwork, also known as Modular Stair Mold or PC Stair Steel Form, is a precision-engineered welded steel structure designed for the casting of precast concrete stair components in prefabricated construction. Manufactured from high-strength steel typically Q345B or Q390B, it is fully customized based on stair geometric configuration, structural joints, and post-fabrication finish requirements.

This formwork serves as a reusable rigid mold to ensure accurate concrete pouring, consistent dimensional accuracy, and smooth surface quality of prefabricated stairs. Its modular design allows for easy assembly, disassembly, and transportation, making it ideal for large-scale PC factories and on-site construction projects.

2. Product Parameters & Specifications

3. Installation & Usage Instructions

3.1 Pre-Use Preparation

• Inspect all components including panels, supports, and connection bolts for damage or deformation.
• Clean the mold cavity to remove debris, rust, or residual concrete.
• Apply release agent such as oil-based or water-based evenly on the inner surface.

3.2 Assembly & Alignment

• Assemble the formwork according to design drawings including exploded views and node details.
• Use leveling tools to ensure horizontal and vertical alignment with tolerance ≤ 2mm per meter.
• Secure all connections with bolts or hydraulic clamps to prevent displacement during pouring.

3.3 Concrete Pouring

• Place reinforcement bars if required and embedments such as sleeves and anchors as per design.
• Pour concrete in layers not exceeding 500mm per layer to avoid segregation or air pockets.
• Vibrate gently to eliminate voids. Avoid over-vibration to prevent surface defects.

3.4 Curing & Demolding

• Cure the concrete via steam curing or natural curing until strength reaches at least 75% of design strength.
• Loosen bolts and clamps gradually and strip the formwork. Use cranes for heavy components.
• Clean and maintain the mold including rust removal and weld repair for the next production cycle.

4. Application Scenarios

• Precast Concrete Factories: Mass production of stair components for residential, commercial, and industrial buildings.
• On-Site Construction: Casting stairs for high-rise buildings, bridges, or infrastructure projects where off-site fabrication is preferred.
• Modular Prefabricated Housing: Production of stair modules for rapid assembly in modular home systems.
• Industrial Projects: Stairs for factories, warehouses, or power plants requiring high durability and precision.

5. Safety Precautions

• Handling & Lifting: Use cranes with certified slings and chains. Ensure the crane's rated capacity exceeds the mold weight.
• Welding & Cutting: Wear protective equipment including masks, gloves, and goggles. Follow fire safety protocols.
• Concrete Pouring: Avoid overfilling. Ensure vibration equipment is properly grounded.
• Maintenance: Regularly inspect welds, bolts, and surface coating. Repair damage immediately.
• Storage: Store in dry, ventilated areas. Stack molds with spacers to prevent deformation.

6. OEM & ODM Customization Services

We offer end-to-end customization to meet the unique project needs of global clients:

• Design & Engineering: CAD/BIM-driven formwork design including exploded views, joint details, and stress analysis based on your stair geometry.
• Material Customization: Q345B, Q390B, or low-temperature steel such as 16MnDR available for harsh environments.
• Surface Treatment: Options include epoxy coating, HDG, and powder coating with RAL color matching.
• Modular Configuration: Customizable panel sizes, connection interfaces including bolts and hydraulic clamps, and stackability for transport.
• Branding & Marking: Laser engraving of company logo, batch number, or technical specs on formwork components.
• Packaging: Export-compliant wooden crates, anti-corrosion wrapping, and container-optimized packaging solutions.

7. Why Choose Us?

• Industry Expertise: Over 10 years of experience in precast formwork manufacturing, trusted by top precast concrete factories in over 20 countries.
• Quality Assurance: ISO 9001 certified with 100% inspection of welding, dimensions, and surface finish before delivery.
• Technical Support: Dedicated engineers provide on-site training, design optimization, and troubleshooting.
• Global Supply Chain: Efficient logistics to North America, Europe, Asia, and Africa with flexible MOQ and short lead times.
• Cost-Effectiveness: Factory-direct pricing with no middleman plus bulk order discounts for long-term partners.