Highway Guardrail Roll Forming Machines

Core Functions and Technical Features:

1. Dedicated Corrugated Forming

Double-Beam Guardrail (W-Beam): Standard type, with a corrugation height of 85mm and a plate thickness of 3-4mm, suitable for general road sections.

Triple-Beam Guardrail (Thrie-Beam): Reinforced type, with a corrugation height of 85mm and a plate thickness of 4mm, suitable for high-risk sections (such as bridges and curves).

Gradually Transition Guardrail: A special roller system achieves a smooth transition from narrow to wide cross-section (such as at the beginning of a road end).

2. High-Strength Material Processing

Applicable materials: S350GD~S550GD high-strength galvanized steel (tensile strength 350-550 MPa), thickness range 2.0-4.5 mm.

Forming pressure can reach over 800 tons, ensuring precise plastic deformation of steel under high strength.

3. Ultra-High-Speed Continuous Production

Line speeds of 60-120 m/min (approximately 15-30 km per day), meeting the needs of large-scale highway construction.

Servo flying saw cutting accuracy ≤±0.5 mm, ensuring smooth, burr-free cuts.

5. Online Punching and Marking

Simultaneously punches connection holes (bolt fixing points) and anti-blocking block mounting holes.

Optional laser marking for production batch/standard numbers (e.g., GB/T 31439).

Core Equipment Components:

Heavy-Duty Uncoiler: Capacity 10-20 tons of steel coils, hydraulically expandable and retractable reel, and automatic centering.

Nine-roller leveler: Eliminates coil stress, achieving a flatness tolerance of ≤1mm/m.

Guide servo feeder: High-precision photoelectric deviation correction ensures the strip enters the forming area in a straight line.

Forming machine (core): 16-25 sets of carbide rollers (Cr12MoV hardened), performing progressive forming in three stages:

• Pre-bending → Corrugation pressing → Sizing calibration

Online punching system: Hydraulic/servo drive, fast die change, hole pitch tolerance of ±0.2mm.

Dynamic flying saw cutting: The saw blade moves synchronously with the guardrail, with coolant to prevent overheating.

Automatic palletizer: Palletizing with a robotic arm or hydraulic push plate, with adjustable stack height (typically 2.5 meters).

Intelligent control system: Industrial PLC + touch screen, integrating parameter setting, fault diagnosis, production statistics, and supporting IoT remote monitoring.

Industry Value:

Engineering Efficiency: A single production line can produce up to 5,000 kilometers of guardrail annually, meeting the needs of 100-kilometer-highway construction.

Improved Safety: The precise wave-shaped structure allows the guardrail to fold in an orderly manner during a collision, absorbing kinetic energy and reducing accident casualties by over 40%.

Cost Optimization: Compared to traditional segmented stamping and welding processes, it saves 12% in material and reduces labor costs by 60%.