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High-speed Guardrail Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine
Guardrail Curved Stamping Roll Forming Machine

Guardrail Curved Stamping Roll Forming Machine

The Guardrail Curved Stamping Roll Forming Machine is used for bending, punching, and processing special shapes at the ends of highway guardrail panels. The equipment utilizes a hydraulic stamping and precision positioning system to achieve rapid forming of curved guardrail structures, improving product installation compatibility. This equipment is widely used in the manufacture of highway guardrails, crash barriers, and traffic safety products.

Dovetail (end-shaped) stamping machine – professional manufacturer, one-time molding, high efficiency, precision, robust and durable.

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Equipment Overview

The dovetail (end-cap) stamping machine is a special hydraulic forming equipment specifically designed for processing the ends (end-caps/fishtail ends) of corrugated beam steel guardrail panels for highways. The guardrail end caps are a crucial component of corrugated guardrails, serving to create a smooth transition at the start or end of the guardrail, effectively guiding out-of-control vehicles to avoid puncture accidents, and are a key component ensuring driving safety. This equipment uses a hydrostatic forming process to stamp both ends of straight or curved guardrail panels into standard dovetail (fishtail) shaped end caps in a single operation.

The entire machine adopts a three-beam, four-column structure, equipped with a PLC fully automatic control system and a touchscreen human-machine interface. The entire process, from material feeding to end cap forming and output, is fully automated and continuous. One machine is suitable for both two-wave and three-wave corrugated guardrail panels, achieving "one machine, two types, flexible production." The equipment is compatible with various materials such as Q235 and Q345 low-alloy high-strength steel, with thicknesses ranging from 2.0 to 8.0 mm. It can process end caps of various specifications, including two-wave (4320×310×85mm) and three-wave (4320×506×85mm) guardrail panels. The entire line requires only 1-2 operators and is a core piece of equipment for highway guardrail manufacturing and construction companies to achieve automated, standardized, and large-scale production of end caps.

The guardrail end caps processed by the dovetail (end cap) stamping machine strictly comply with the national standards GB/T 31439.1-2025 "Wave Beam Steel Guardrail Part 1: Two-Wave Beam Steel Guardrail" and GB/T 31439.2-2025 "Wave Beam Steel Guardrail Part 2: Three-Wave Beam Steel Guardrail".


Core Advantages and Selling Points

1. One-time Stamping Forming, Smooth and Burr-Free Ends

This is the core advantage that distinguishes this equipment from traditional processing methods.

Traditional end processing uses plasma cutting followed by manual bending and grinding, resulting in numerous burrs, inconsistent shapes, and poor protective performance—industry pain points. This equipment uses a hydrostatic forming process, forming standard fishtail (dovetail) ends in a single stamping. The ends are smooth and burr-free, with symmetrical and uniform curvature, perfectly matching highway guardrail installation standards and providing stronger protective and buffering performance. It replaces multiple traditional processes such as cutting, grinding, and shaping, significantly reducing process flow.

2. One Machine, Dual Types, Suitable for Two-Wave and Three-Wave Patterns

This equipment adopts a modular mold design, allowing for quick switching between two-wave and three-wave guardrail end processing on the same machine by changing the mold. The equipment is compatible with various specifications, covering different plate widths, wave heights, and thickness requirements. Specification switching is completed through a quick mold change system, requiring no professional technicians; ordinary operators can perform the switching. 3. Doubled Production Efficiency and High Material Utilization: Integrated molding process eliminates multiple steps such as cutting, grinding, and shaping, increasing production efficiency by over 40% compared to traditional processes. Material utilization reaches 92%, effectively reducing production costs. Fully automated production requires only 1-2 people for monitoring, resulting in several times the efficiency compared to traditional production models.

4. Wide Range of Applications to Meet Diverse Needs: Mainstream 315-ton and 400-ton models are available. Compatible with two-wave/three-wave guardrail panels and galvanized sheets of varying thicknesses. Capable of integrated molding processes including guardrail fishtail end forming, capping, finishing, bending, and stretching. Meets the processing needs of various guardrail ends for highways, municipal roads, and rural roads. Widely applicable to large-scale processing plants and small to medium-sized production workshops.

5. Three-Beam Four-Column Structure for High Rigidity and Precision: Utilizes a three-beam four-column structure, offering high rigidity and excellent resistance to eccentric loads. The hydraulic system boasts powerful punching force, specifically designed for punching the ends of thick-plate guardrails. A closed hydraulic circuit paired with a silent pump station ensures low operating noise. Automatic overload shutdown protection provides comprehensive operator safety. It meets industrial environmental protection production requirements.

6. Robust and Durable, Easy Maintenance

The machine body features a fatigue-resistant design, ensuring durable hydraulic components and a low failure rate. The modular structure design simplifies parts inspection and replacement, reducing maintenance costs. Key components utilize high-quality materials, ensuring stable and reliable operation under long-term high loads.

7. Intelligent Control, Easy Operation

PLC fully automatic control and a touchscreen human-machine interface enable full-process digital management. The equipment offers both manual and automatic operation modes to meet different production needs. Equipped with a real-time monitoring and fault warning system, it automatically alarms and displays the cause of any abnormalities. New operators can work independently after 1-2 days of training, significantly reducing the skill requirements.


Technical Parameters (Taking the 400T model as an example)

Item Parameter Applicable Materials Q235, Q345 low alloy high strength steel, etc.
Material Thickness: 2.0- 8.0 mm
Processing Waveform Two-wave (two-wave) / Three-wave (three-wave)
Equipment Structure: Three-beam, four-column type
Nominal Pressure 4000KN (400 tons)
Liquid Pressure 25Mpa
Effective Slider Stroke 800mm
Maximum Opening Height 1250mm
Idle Stroke Descent Speed ​​100-120mm/s
Pressing Speed ​​7-15mm/s
Return Speed ​​90-100mm/s
Motor Power 22KW
Control System: PLC, Fully Automatic Control
Operators: 1-2 people


Production Process

Guardrail Panel Loading → Positioning and Clamping → Hydraulic Stamping Forming (End Cap/Fishtail End) → Demolding → Unloading

Process Description
Guardrail Panel Loading: Load the cold-bent straight or curved guardrail panels onto the stamping machine worktable.
Positioning and Clamping: The automatic positioning device precisely positions and clamps the end caps of the guardrail panels.
Hydraulic Stamping Forming: The hydraulic system drives the mold to stamp and form standard dovetail (fishtail) end caps in one pass.
Demolding: Automatic demolding after forming.
Unloading: Finished end guardrail panels are output neatly.


Application Areas

The guardrail end products processed by the dovetail (end-sealing) stamping machine are widely used in the following areas:

Highways: End sealing of the starting and ending points of highway guardrails—the fishtail end provides a smooth transition, effectively guiding out-of-control vehicles to avoid puncture accidents.

National and Provincial Trunk Highways: Processing of guardrail end pieces for Class I and Class II highways.

Municipal Roads and Urban Expressways: Guardrail end pieces for urban elevated roads and expressways—the fishtail end is aesthetically pleasing and durable.

Bridges and Tunnels: Guardrail end pieces for bridge transition sections and tunnel entrances/exits—the end sealing is consistent with the guardrail alignment.

Mountain Roads: Guardrail end pieces for curves and cliff-side sections of mountain roads.

Industrial Parks and Factory Roads: Guardrail end pieces for internal roads in large industrial parks and logistics parks.


Market Prospects

With the continuous advancement of global infrastructure construction, the highway guardrail market is showing a stable growth trend. The global highway guardrail component market size was approximately US$1.259 billion in 2025 and is projected to reach US$1.783 billion by 2032, with a compound annual growth rate (CAGR) of 5.1%. The Chinese roadside safety barriers construction market is projected to reach US$1.92 billion in 2025 and is expected to grow to US$2.63 billion by 2031, with a CAGR of 5.43%. Corrugated beam guardrails account for 78% of the highway guardrail market share.

The Standardization Administration of China issued GB/T 31439.1-2025 "Corrugated Beam Steel Guardrails Part 1: Two-Corrugated Beam Steel Guardrails" and GB/T 31439.2-2025 "Corrugated Beam Steel Guardrails Part 2: Three-Corrugated Beam Steel Guardrails" on August 29, 2025, which will be implemented from March 1, 2026. The new national standard sets higher requirements for the processing precision and protective performance of guardrail end caps, leading to a continued increase in demand for high-quality dovetail (end cap) stamping equipment.

The penetration rate of fully automated and intelligent highway guardrail equipment has increased from 32% in 2020 to 67% in 2025, with a compound annual growth rate of 15.8%. With the ongoing "two-wave to three-wave" project (changing from two curved "two-wave" guardrails to wider, more impact-resistant "three-wave" guardrails), the demand for three-wave guardrail end cap processing has increased significantly, making the need for dovetail (end cap) stamping equipment compatible with both two-wave and three-wave guardrails particularly urgent.


Service Support

Solution Design: We provide customized equipment selection and production line layout based on customer product drawings, capacity requirements, and target markets.

Customized Manufacturing: We support non-standard customization, offering full control from head mold design to complete machine manufacturing.

Installation and Commissioning: Engineers provide on-site installation and commissioning, and train operators to ensure rapid production.

After-sales Guarantee: Long-term technical consultation and spare parts supply, with complete engineer certifications, and global on-site service available at any time.

Continuous Optimization: We can provide equipment modification and capacity upgrade services according to changes in customer production needs.


Why Choose Us

Nearly 20 Years of Manufacturing Experience: Mature Technology, Perfected Processes, Reliable Quality

One-Step Stamping: Smooth, burr-free ends, symmetrical and uniform curvature, perfectly replacing multiple processes like cutting, grinding, and bending.

One Machine, Two Types: Two or three wave types can be handled by one machine; interchangeable by changing the mold, eliminating the need for repeated investment.

High-Efficiency Production: Production efficiency increased by over 40%, material utilization rate up to 92%.

Large Tonnage and Long Stroke: 400-ton nominal pressure, 1250mm maximum opening height, specifically designed for thick-plate guardrail ends.

Three-Beam Four-Column Structure: High rigidity, high precision, and excellent resistance to eccentric loads.

Robust and Durable: Fatigue-resistant design, modular structure, easy maintenance.

Intelligent Control: PLC fully automatic + touchscreen operation; 1-2 people can operate the entire line.

New National Standard Compliance: Products strictly comply with GB/T 31439.1-2025 and GB/T 31439.2-2025

Direct Factory: No intermediaries, high cost-performance ratio

Global Service Network: Fully certified engineers, rapid response

Item Specification
Four-column hydraulic press tonnage 400T
Press stroke rate 4–10 strokes/min
Press motor power 22kW
Molds 2 sets (for changing molds when producing different patterns)
Upper and lower mold material Cr12MoV or SDK11
Upper and lower mold heat treatment hardness HRC58–62

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About
Wuxi Yanwu Xinhui Technology Co., Ltd.

Established in 2012, Wuxi Yanwu Machinery Co., Ltd., is a professional manufacturer specializing in the R&D, design, manufacturing, and servicing of cold roll forming equipment. The company is dedicated to providing global customers with integrated solutions for automated cold roll forming production lines.

Our main products include cable tray forming machines, racking forming machines, C/Z purlin machines, solar mounting bracket forming machines, floor deck machines, door frame machines, automotive profile equipment, and cut-to-length/slitting lines.

These products are widely used in the construction, electrical power, logistics and warehousing, automotive manufacturing, new energy, and infrastructure sectors.

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