U-Shaped Trench Steel Formwork

Precast Concrete Drainage Channel Molding System Product Brochure

1. Product Introduction

The U-shaped trench steel formwork is core tooling for prefabricating U-shaped drainage channel components in urban municipal engineering, highway and railway engineering, and rail transit projects. Manufactured from high-strength alloy steel such as Q345B and Q390B, it is produced through CNC cutting, precision welding, and heat treatment processes.

Its core function is to provide a precise concrete casting cavity for precast U-shaped trench components, ensuring dimensional accuracy within ±2mm, superior surface finish, and consistent structural strength. Prefabricated trench units are transported to site and installed rapidly via jointing, sealing, and backfilling, significantly improving construction efficiency and reducing on-site wet-work pollution.

During the design phase, parameters including trench cross-sectional dimensions, load class, and joint type are integrated to produce detailed formwork disassembly drawings and full structural verification. The final product is completed through blanking, welding, grinding, and anti-corrosion treatment processes.

2. Product Parameters & Specifications

3. Product Usage Instructions

• Formwork Preparation: Inspect formwork surfaces for deformation, weld slag, or corrosion. Verify fasteners and lifting system are intact. Clean residual concrete and debris from the mold cavity.
• Release Agent Application: Spray water-based or oil-based release agent evenly per product specifications, focusing on all panel-concrete contact surfaces.
• Reinforcement Cage Placement: Gently lower the prefabricated U-shaped trench reinforcement cage with stirrups, longitudinal bars, and embedded parts into the mold. Ensure accurate positioning within 5mm deviation and uniform concrete cover thickness of at least 25mm.
• Concrete Pouring: Pour C30/C35 concrete via pump or chute. Vibrate thoroughly for full compaction, avoiding missed areas or over-vibration, and finish the surface smooth.
• Curing & Demolding: Apply geotextile cover or steam curing in winter after pouring. When concrete reaches 75% of design strength, loosen fasteners, remove lifting gear, and demold slowly to avoid impact damage.
• Formwork Maintenance: Clean the cavity after demolding. Inspect welds and panel wear. Apply anti-rust oil and store by category to avoid deformation from over-stacking.

4. Application Scenarios

• Municipal Engineering: Urban road side ditches, rainwater manhole connection trenches, and underground utility gallery drainage channels.
• Highway Engineering: Subgrade drainage for expressways and Class I highways, and drainage systems for service areas and toll stations.
• Rail Transit Engineering: Drainage around subway and light rail stations, track section subgrade drainage, and parking lot drainage systems.
• Industrial Parks: Linear drainage systems around factory buildings, logistics parks, and energy facilities.
• Water Conservancy Projects: Small river regulation, pump station forebay drainage, and farmland irrigation precast U-shaped channels.

5. Safety Precautions

5.1 Operational Safety

• Strictly follow lifting procedures with balanced lifting points and clear signals. Overloading is strictly prohibited; lifting capacity must be at least 1.5 times the mold weight.
• Wear cut-resistant gloves and safety helmets when handling and moving formwork to avoid cuts from sharp edges.

5.2 Structural Safety

• Regularly inspect welds for cracking, panels for deformation, and fasteners for thread slippage. Immediately take out of service and repair if hazards are identified.
• Control concrete slump between 160–200mm during pouring to avoid formwork deformation from excessive lateral pressure.

5.3 Storage Safety

• Store formwork in a dry, flat area, padded with wooden blocks to prevent direct ground contact and corrosion. Stack by category with maximum height of 2m.
• For long-term storage, apply anti-rust paint and moisture-proof film, and schedule regular inspection and maintenance.

6. OEM & ODM Customization Services

We offer full-spectrum customization services to meet the personalized needs of global clients:

• Design Customization: Custom formwork disassembly drawings, structural verification, and 3D simulation based on your trench CAD/BIM drawings, load requirements, and joint types.
• Material Customization: Q345B, Q390B, stainless steel, and weathering steel available to adapt to different environments including coastal, chemical, and cold regions.
• Surface Treatment: Options include hot-dip galvanizing, epoxy coating, powder coating in RAL colors, and DACROMET to meet corrosion and aesthetic requirements.
• Function Customization: Add vibration motor interfaces, heating systems for winter construction, and quick-disassembly mechanisms to improve construction efficiency.
• Accessory Customization: Custom tie bolts, lifting rings, positioning pins, and release agent nozzles to match your existing construction systems.
• Packaging Customization: Export-grade fumigation-free wooden crates with anti-rust film and identification labels, with ISO and CE certification support.

7. Why Choose Us?

• Industry Experience: Over 10 years of R&D and manufacturing experience in precast formwork, serving over 20 countries worldwide with more than 5,000 U-shaped trench mold sets delivered.
• Technical Strength: In-house BIM design team and CNC machining center enabling full-process digitalization from design to manufacturing to inspection, with precision error ≤2mm.
• Quality Assurance: ISO 9001 certified. Each mold undergoes three-stage inspection plus third-party UT/MT flaw detection before shipment, backed by a 1-year warranty.
• Service Response: 7×24 technical support with 48-hour after-sales response. On-site installation guidance, mold repair, and refurbishment services available.
• Cost Advantage: Factory-direct supply with no middlemen and tiered discounts for bulk orders. Mold reuse of ≥200 cycles reduces per-use cost.