These introductions refer only to the production line and configuration shown in the main image. Each machine is custom-built. Metalign welcomes your inquiry and provides the right production line—forming metal into profiles aligned to your needs.

1. Production Line Overview

A dedicated roll forming solution designed for highway infrastructure manufacturers, offering automation, high-precision punching, and strong steel profile forming for 3–4mm U posts.

2. Profile Description

Cold-rolled galvanized steel U post, 3–4mm thick, with top flanges and slotted holes, designed for anchoring guardrails. Features strong impact resistance, standardized hole positions, and applications in road safety.

3. Production Process

5T Hydraulic Decoiler → Feeder & Guide → Leveling Machine → Hydraulic Punching → Guiding Device → Roll Former → Stop Shear Cutting → Out Table
The production begins with heavy coil feeding aided by a motorized head feeder. After leveling, high-speed hydraulic punching creates mounting holes before roll forming. Stop-cutting ensures no material waste.

4. Technical Parameters

Machine	Analysis
Hydraulic Decoiler	Holds and feeds heavy 3–4mm coils (up to 5T).
Hydraulic Decoiler	Includes pressing arm to avoid coil bouncing.
Head-Type Feeder	Provides extra force to push thick steel forward.
Head-Type Feeder	Prevents steel buckling at coil start.
Leveler	Flattens steel for consistent punching and forming.
Leveler	Built with forming base to ensure alignment.
Hydraulic Punching	One large, one small station to punch holes before forming.
Hydraulic Punching	Shares base with roll former, keeps hole accuracy.
Guiding Device	Aligns material into forming section smoothly.
Roll Former	Gearbox-driven for high torque and stability.
Roll Former	Form U shape with side flanges for guardrail post.
Stop Shear Cutter	Cuts to length without producing scrap.
Stop Shear Cutter	Controlled by encoder for precise cut length.
Out Table	Collects formed and cut profiles.

5. Key Focus

Hydraulic head-feeder ensures smooth entry for thick steel coils.
Punching and forming machine share one base for better alignment.
Hole positions align with installation points for efficient post-assembly.
Stop-cutting avoids scrap and improves material utilization.
Integrated gearbox drive ensures stability in thick material forming.

6. Production Line Components

Machine	Quantity
Hydraulic Decoiler	1 set
Head-Type Feeder & Guide	1 set
Leveling Machine	1 set
Hydraulic Punching Machine	1 set
Material Guiding Device	1 set
Roll Former	1 set
Hydraulic Cutter	1 set
Out Table	2 sets
Hydraulic Station	2 sets
PLC Cabinet	1 set

7. Customization Options

We offer tailored solutions for the U post profile, including adjustable punching die positions, post dimensions, hole shapes (round/oval), and forming stations for different U post sizes or wall thickness from 2.5mm to 5mm. Roll forming speed and decoiler type can also be upgraded for large-scale projects.

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3-4mm Heavy Steel U Post Roll Forming Machine With Inline Punching And Stop Cut System