by melinda
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Are you looking for processing equipment for a guardrail project? You have read through a lot of information, but you still are not sure whether your materials will work or which equipment can process them properly.
We understand your concerns. Wrong materials mean guardrails that cannot withstand impacts. Mismatched equipment means defective products even with good steel. You want a production line that can stably process S235J and S355J steel strips and produce guardrails that meet standards.
Our 2/3 waves highway guardrail cold making machine is built exactly for these two mainstream guardrail steel grades. From automatic uncoiling to automatic stacking, this production line is designed for continuous processing of 3.0mm steel strips. It helps you turn material advantages into product advantages.
Highway Guardrail Cold Making Machine
Material Selection
You have probably already looked into what materials are used for guardrails. The international mainstream choice is S235J and S355J structural steel, two globally recognized grades.
S235J is general purpose structural steel suitable for 2 wave guardrails on standard road sections. S355J is high strength structural steel commonly used for 3 wave guardrails and high risk road sections.
Beyond the base material, guardrails also require hot dip galvanizing or powder coating. The zinc coating provides corrosion protection and extends service life.
Highway Guardrail Cold Making Machine Finished Product Picture
Technical Reference
Here are the core specifications to help you quickly assess whether this production line matches your needs.
| Parameter | Typical Value |
|---|---|
| Applicable Material | S235J / S355J (3.0mm thickness) |
| Product Width | 310mm (2 wave) / 506mm (3 wave) |
| Product Height | 85mm |
| Product Length | 4000 / 4320 / 4500mm (±2mm tolerance) |
| Production Speed | ≤10m/min |
| Total Power | approximately 133KW |
| Floor Space | approximately 40m × 4m × 2m |
Parameters are common reference configurations and can be adjusted on request.
Applications
Finished guardrails from this production line are widely used in:
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Highway roadside protection and median barriers
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Bridge and elevated road crash barriers
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Tunnel interior protection and guidance systems
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Urban expressway separation barriers
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Mountainous curves, slopes, and cliff side road safety barriers
Application of finished highway guardrails
Production Process Flow
Hydraulic uncoiler → Leveler → Hydraulic press and pinch → 3 set hydraulic pre punching → Pre cutting → Main roll forming machine → Post hydraulic stop cutting → Transport table → Automatic stacker
Production Process
Uncoiling and Leveling: The hydraulic uncoiler unwinds steel coils weighing up to 10 tons. A 7 roller leveling system with 2 pinch rollers removes coil curvature and surface waves.
Uncoiler for highway guardrail roll forming machine
The leveling section of the highway guardrail roll forming machine
Punching: The 3 station hydraulic punching system completes all hole processing in one pass. The 300 ton main press punches 18 slot holes simultaneously, the 60 ton press handles traceability numbers, and the 30 ton auxiliary press processes middle holes.
The punching section of the highway guardrail roll forming machine
Roll Forming: The steel strip enters the main forming machine and passes through multiple roller stations for gradual cold forming. The frame uses high quality steel sections with welded construction, shot blasting treatment to relieve stress, and CNC gantry milling for mounting surface precision.
The forming section of the highway guardrail roll forming machine
Cutting and Stacking: The post hydraulic stop cutting shears the continuous profile to the preset length with a ±2mm tolerance. Finished products move out on the transport table and are stacked automatically.
The cutting section of the highway guardrail roll forming machine
The automatic stacking section of the highway guardrail roll forming machine
Processing Range
This equipment is designed for S235J and S355J structural steel. Steel strip thickness is 3.0mm, and width is customized according to client drawings (reference values 47.7mm/744mm). Coil inner diameter ranges from Φ508mm to Φ600mm, outer diameter does not exceed Φ1600mm, and coil weight is up to 10 tons.
Just confirm that your material specifications fall within this range. If your project involves other thicknesses or materials, we can adjust the configuration to your specific conditions.
The hydraulic section of the highway guardrail roll forming machine
Precision Assurance
Forming precision depends on roller material and processing technology. Our rollers use Cr12MoV die steel, and we machine them on CNC lathes and vacuum harden them to HRC58-60. This configuration ensures the rollers maintain dimensional stability during long term processing of high strength steel like S355J.
The frame uses high quality steel sections with welded construction, shot blasting to relieve welding stress, and CNC gantry milling for flatness. Positioning key grooves at the bottom of each forming station guarantee roller shaft parallelism and prevent material deviation.
Display of components for the highway guardrail roll forming machine
Selection Advice
This production line handles both S235J and S355J materials and covers both 2 wave and 3 wave profiles. It runs fully automatically from material to finished product.
When you started looking into materials, you may have worried about whether the equipment could process high strength steel, whether product precision would meet requirements, or whether the line would run stably. We can adjust the solution for your specific conditions.
Contact us and tell us about your material specifications and production capacity needs.
Whatsapp/wechat: +8617832978885, Email:[email protected]
