Highway Guardrail Roll Forming Machine

A highway guardrail roll forming machine turns flat steel coils into finished W-beam or Thrie-beam guardrails. It punches holes, forms the profile, cuts to length, and stacks panels — all in one automated flow. One line can switch between both guardrail types. No second machine needed.

Believe Industry builds these machines in Wuxi, China. Each highway guardrail roll former is custom-engineered to your profile, thickness, and speed targets. We ship worldwide. Our engineers handle installation and commissioning at your factory.

Need the full system? We also make the guardrail post roll forming machine for posts and connectors. Pair both lines to produce a complete highway guardrail system.

What Is a Highway Guardrail?

A highway guardrail is a safety barrier along roads. It stops vehicles from leaving the roadway. Guardrails absorb impact energy. They redirect the vehicle back onto the road.

Most highways use two types: W-beam and Thrie-beam. The material is galvanized steel. Thickness ranges from 2.67mm to 4.5mm. Guardrail panels are usually 3.81m or 4m long. Holes are punched at both ends for bolted connections.

W-Beam vs Thrie-Beam Guardrail: Full Comparison

Both types are widely used. The choice depends on road speed, traffic volume, and impact risk. Here is how they compare:

Feature	W-Beam Guardrail (Two-Wave)	Thrie-Beam Guardrail (Three-Wave)
Profile Shape	Two corrugations (W shape)	Three corrugations (triple wave)
Panel Height	~310 mm	~506 mm
Material Thickness	2.67 mm – 3.42 mm	2.67 mm – 4.0 mm
Steel Grade	Grade 345 – 550 MPa	Grade 345 – 550 MPa
Standard Length	3,810 mm or 4,000 mm	3,810 mm or 4,000 mm
Typical Use	Standard highways, rural roads	Bridges, sharp curves, high-speed zones, heavy truck traffic
Containment Level	N2 (typical)	H1 – H2 (higher)
Cost per Meter	Lower	15% – 25% higher
Global Standards	AASHTO M180, EN 1317, AS/NZS 3845	AASHTO M180, EN 1317, AS/NZS 3845

One Highway Guardrail Roll Forming Machine, Two Guardrail Types

Our latest highway guardrail machine can produce both W-beam and Thrie-beam profiles. Quick-change cassette design makes switching possible. Here is how it works:

The guardrail roll former machine uses interchangeable roller cassettes — one set for W-beam, one for Thrie-beam.
An overhead crane lifts the cassette into or out of the mill base. The switch takes about 20–30 minutes.
The same 5-ton hydraulic uncoiler feeds both profiles. No need to swap the uncoiler.
The hydraulic punching unit adjusts hole positions via the PLC touch screen. Punch dies stay the same for both types.
The hydraulic cutting blade cuts both profiles. The encoder adjusts cut length automatically.

This dual-type highway guardrail machine cuts floor space in half. It also halves the equipment investment compared to buying two separate lines.

Machine Layout and Workflow

The standard highway guardrail roll former layout follows this sequence:

5-Ton Hydraulic Uncoiler — holds and feeds the steel coil into the line.
Feeding & Leveling Device — straightens the strip before punching. 9-leveling-roller design.
Hydraulic Punch Unit (Online) — punches mounting holes at both ends of each panel.
Roll Forming Mill (16 Stations) — bends the flat strip into W-beam or Thrie-beam shape. GCR15 rollers, HRC 58–62, chrome coated.
Hydraulic Cutting Device — cuts the formed guardrail panel to length. Omron encoder, tolerance ±1.5mm.
Auto Stacker — stacks finished panels on the output table.
PLC Control Cabinet — Panasonic PLC, Yaskawa inverter, touch screen in English and Chinese.

Key Highway Guardrail Roll Forming Machine Specifications

Each component is built to industrial standards. Key parts come from certified suppliers: ABB motors, Omron encoders, Yaskawa inverters, and GCR15 bearing steel rollers.

1. Hydraulic Uncoiler

Holds the steel coil and feeds it into the line. The hydraulic expansion mandrel grips the coil from the inside.

Parameter	Specification
Type	Hydraulic expansion mandrel, cantilever
Coil Capacity	5 tons (10,000 lbs)
Coil Inner Diameter	508 mm / 610 mm (20″ / 24″)
Coil Outer Diameter	Up to 1,500 mm
Coil Width Range	200 – 800 mm
Mandrel Expansion	Hydraulic 4-segment, self-centering
Drive Motor	3 kW, geared brake motor
Brake	Pneumatic disc brake
Loading Method	Overhead crane or forklift
Coil Car (Optional)	Hydraulic lift, 2-ton capacity

2. Feeding & Leveling Device

Straightens the strip before punching. Flat strip means accurate hole positions.

Parameter	Specification
Type	9-roller precision leveler
Leveling Roller Diameter	Ø80 mm
Leveling Roller Material	GCR15, HRC 58–62, chrome coated
Number of Leveling Rollers	9 (5 upper + 4 lower)
Feed Motor	5.5 kW AC servo (Panasonic)
Feeding Accuracy	±0.5 mm
Strip Thickness Range	2.0 – 4.5 mm
Strip Width Range	200 – 800 mm
Entry Guide	Side rollers with manual width adjustment

3. Hydraulic Punch Unit (Online)

Punches mounting and splice holes at both ends of each guardrail panel. Holes are punched while the strip is flat — before roll forming.

Parameter	Specification
Type	Hydraulic C-frame press, servo-positioned
Punching Force	630 kN (63 tons)
Hydraulic Power	35 kW, 25 MPa working pressure
Hole Diameters	18 mm, 20 mm, 22 mm (custom sizes available)
Hole Configuration	Programmable via PLC touch screen
Hole Spacing Tolerance	±0.5 mm
Punch Material	SKD11 or DC53, HRC 60–62
Die Material	Cr12MoV, HRC 58–62
Die Type	Quick-change die set
Number of Punch Tools	Up to 4 tools per setup
Stroke Length	200 mm
Positioning Drive	Servo motor with ball screw
Strip Clamping	Hydraulic clamp before punching cycle

4. Roll Forming Mill (16 Stations)

The core of the highway guardrail roll forming machine. Flat strip enters, formed guardrail profile exits. Each station bends the strip a little more.

Parameter	Specification
Number of Stations	16 (expandable to 20)
Station Spacing	450 mm
Roller Material	GCR15 (bearing steel), HRC 58–62
Roller Coating	Hard chrome plating, 0.05 mm thickness
Roller Design Software	COPRA® (data M)
Roller Machining	CNC lathe, wire-cut EDM for complex profiles
Shaft Diameter	Ø110 mm
Shaft Material	40# steel, quenched & tempered, HRC 28–32
Main Drive Motor	30 kW x 2, ABB brand, 4-pole
Gearbox	Hardened helical gear, ratio 20:1
Transmission	Universal joint shafts with needle bearings
Forming Speed	10 – 15 m/min (adjustable via inverter)
Frame Construction	Higher Duty Cast Iron Stands
Top Shaft Adjustment	Manual screw-down, digital readout
Guide Rollers	Vertical + horizontal, at station entry and exit
Lubrication	Manual grease points at each bearing housing
Profile Change	Quick-change cassette system (W-beam ↔ Thrie-beam)

5. Hydraulic Cutting Device

Cuts the formed guardrail panel to the target length. Post-cut design — the line stops, the blade descends, and the panel drops.

Parameter	Specification
Type	Hydraulic post-cut (stop-to-cut)
Cutting Force	400 kN
Hydraulic Cylinder	Ø160 mm bore, 250 mm stroke
Blade Material	Cr12 tool steel, HRC 58–62
Blade Shape	Profile-matched (W-beam or Thrie-beam)
Blade Life	~300,000 cuts (typical)
Cut Length Tolerance	±1.5 mm
Length Setting	Digital, via HMI touch screen
Encoder	Omron E6B2-CWZ6C rotary encoder
Cutting Cycle Time	~3 seconds per cut
Hydraulic Station	7.5 kW, independent pump

6. Auto Stacker

Finished panels slide onto the output table. The stacker counts and organizes them.

Parameter	Specification
Type	Pneumatic side-push stacker
Stacking Height	Up to 500 mm (100 – 120 panels)
Run-Out Table Length	6,000 mm, roller conveyor
Stacker Drive	1.5 kW geared motor
Stacking Mode	Automatic counting + push-off
Panel Counter	Digital, resettable via HMI
Pneumatic Requirement	0.6 MPa compressed air

7. PLC Control System

All highway guardrail machine functions run through one control cabinet. Touch screen interface. Multi-language.

Parameter	Specification
PLC	Panasonic FP-XH (Siemens S7-1200 / Mitsubishi FX5U optional)
HMI	10-inch color touch screen, 64K colors
Inverter	Yaskawa V1000, 30 kW x 2
Encoder	Omron E6B2-CWZ6C, 2000 P/R
Servo Drive	Panasonic Minas A6 (punch positioning)
Display Languages	English, Chinese (Spanish/Russian/Arabic optional)
Control Functions	Length setting, quantity preset, line speed, punch position, auto/manual mode, fault alarm, emergency stop
Electrical Components	Schneider contactors & relays
Wiring	Numbered wires, trunking layout, clear labeling
Safety Features	Emergency stop buttons (3 points), overload protection, light curtain interface (optional)
Remote I/O	Ethernet port for remote diagnostics

8. Overall Line Parameters

Parameter	Specification
Total Line Length	~22,000 mm
Line Width	~3,000 mm
Line Height	~2,200 mm (top of roll former)
Total Installed Power	~100 kW
Power Supply	415V / 50Hz / 3-Phase (380V / 440V / 480V / 60Hz customizable)
Compressed Air	0.6 MPa, 0.5 m³/min
Machine Weight	~50 tons
Noise Level	≤85 dB(A) at 1 meter
Operating Temperature	0 – 45°C
Operator Requirement	2 – 3 persons per shift
Container Requirement	2 × 40HQ or 1 × 40HQ + 1 × 20GP

Our highway guardrail roll forming machines comply with international guardrail standards including U.S. DOT specifications, AASHTO M180, and EN 1317 European norms.

Supplier Comparison: Believe Industry vs China vs EU & US Suppliers

Not all suppliers are the same. Here is how Believe Industry compares with typical Chinese manufacturers and European/US suppliers of highway guardrail machines:

Factor	Believe Industry	Typical China Supplier	EU / US Supplier
Price Range (USD)	$80, 000-$ 180,000	$50, 000-$ 120,000	$200, 000-$ 450,000
Roller Design	COPRA® software, CNC machined GCR15	Manual or basic CAD, 45# steel common	COPRA® or proprietary, tool steel
PLC / Control	Panasonic, Siemens, or Mitsubishi	Local brand or Delta	Siemens, Allen-Bradley
Dual Profile (W+Thrie)	Yes — quick-change cassette	Rare — usually single profile	Optional — high surcharge
Global Installation	Yes — engineers on site	Often video-only support	Yes — included in price
Lead Time	60 – 90 days	45 – 75 days	120 – 180 days
Warranty	24 months + spare parts	12 months (parts limited)	12 – 24 months
After-Sales Response	24-hour WhatsApp/email	48–72 hours typical	Business hours, local time
Language Support	English, Chinese, Spanish, Russian	Chinese + basic English	English, local EU languages
Customization	Full — any guardrail profile	Limited to catalog profiles	Full — high engineering cost

Believe Industry offers European-level engineering at China-level pricing. The dual-profile highway guardrail machine gives you both W-beam and Thrie-beam from one investment.

Explore other machines: our full roll forming machine range. Need a custom profile? See our customized profile solutions. For pallet racking systems, check the pallet racking roll forming machine. For strut channels: strut channel roll forming machine.

Frequently Asked Questions

What is a highway guardrail roll forming machine?

This machine is an automated line that produces finished guardrail panels from steel coil. It handles uncoiling, leveling, online punching, roll forming, cutting, and stacking. Output speed is 10–15 m/min.

Can one machine produce both W-beam and Thrie-beam guardrails?

Yes. Believe Industry’s highway guardrail roll former uses interchangeable roller cassettes. Switching from W-beam to Thrie-beam takes about 20–30 minutes. The uncoiler, punch, cutter, and PLC handle both types.

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What material thickness can this machine process?

The machine processes coil from 0 to 4.5 mm thick. Most highway guardrails use 2.67mm to 3.42mm galvanized steel. Yield strength up to 550 MPa.

How accurate is the cut length?

The Omron encoder and hydraulic cutting system hold ±1.5 mm tolerance per panel. You set the target length on the touch screen. The machine stops to cut each panel.

What standards do your machines meet?

Our highway guardrail machines produce guardrails compliant with AASHTO M180, EN 1317, and AS/NZS 3845. We design to your local standard. Send us your profile drawing and we match it.

Do you offer installation support?

Yes. Believe Industry sends engineers to your factory. We handle machine setup, roller alignment, test runs, and operator training. Remote support is also available for maintenance questions.

Watch the machine in action: highway guardrail crash barrier roll forming machine video.

Request Your Engineering Proposal

Tell us your guardrail profile and production targets. Our engineering team designs a production line matched to your factory. Dual-type or single-type. W-beam or Thrie-beam. We deliver the solution that fits.

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