Highway Guardrail Roll Forming Machine | Jinbolida, Shandong, China

Jinbolida Guardrail Roll Forming Machine – Corrugated Beam Guardrail for Highways and Bridges

The Jinbolida Guardrail Roll Forming Machine is a complete production line for corrugated beam (W-beam) steel guardrail used as safety barriers on highways, bridges and roads. It's designed around the demands of guardrail production: high-strength steel with strong springback, tight dimensional tolerances and precisely spaced bolt holes so panels are interchangeable on site. A heavy-duty leveller flattens the high-strength coil, multi-pass forming creates the corrugated section, in-line hydraulic punching adds splice and post holes, and a heavy hydraulic shear cuts each panel to length, ready for galvanising or painting. The line is built to meet China's JT/T 281 guardrail standard.

Line Sequence

• Heavy-duty levelling: A 9 or 11-roll leveller removes coil set from high-strength, low-alloy steel so it enters the former flat
• Roll forming: Initial passes pre-bend the edges, then contoured rolls form the corrugated section with its central stiffening rib
• Springback control: Over-bending in the forming passes compensates for the steel's springback
• In-line hydraulic punching: Splice and post connection holes are punched at standard intervals, with a servo feed synchronised to the punch for accurate hole positions
• Cut-off: A heavy-duty hydraulic shear or combination die cuts panels to length with clean, regular ends for easy lapping on site
• Automatic stacking: Finished panels are stacked, ready for hot-dip galvanising or painting

Key Features

• Complete line for corrugated beam guardrail panels
• Heavy 9 or 11-roll leveller for high-strength, low-alloy steel coil
• Multi-pass forming with over-bending for accurate profiles despite springback
• High-tonnage hydraulic punching of splice and post holes
• Servo feed synchronised with the punch for precise hole spacing
• Heavy-duty hydraulic shear or combination die cut-off
• Automatic stacking of finished panels
• Designed to meet the JT/T 281 guardrail standard for thickness, corrugation height and length

Configurable Options (to be confirmed with Jinbolida)

• In-line laser distance sensors monitoring cross-section dimensions, with automatic feedback to the control system
• In-line shot blasting or pre-treatment cleaning before forming

Applications

• Highway and expressway safety barriers
• Bridge guardrail
• Rural and urban road barriers
• Car park and industrial site protection barriers

Commercial Details

• Brand: Jinbolida
• Manufacturer: Shandong Jinbolida Precision Machinery Co., Ltd.
• Place of origin: Heze, Shandong, China
• Standard: Designed to JT/T 281 (China highway guardrail standard)

Frequently Asked Questions

• What guardrail profile does it produce? Corrugated beam (W-beam) guardrail panels with a central stiffening rib and bolt holes for splicing and post connections.
• Why does the line need a heavy leveller? Guardrail uses high-strength steel with strong springback. The 9 or 11-roll leveller flattens it fully before forming.
• How are hole positions kept accurate? The servo feed is synchronised with the hydraulic punch, so holes are punched at precise standard intervals.
• Does the line galvanise the panels? No. Panels are stacked for hot-dip galvanising or painting on a separate line.
• What should I send for a quotation? Guardrail profile drawing or standard (e.g. JT/T 281, AASHTO M180, EN 1317), steel grade and thickness, panel lengths, hole pattern, required output, and your local voltage and frequency.