Coil Car

Coil Car – For ERW Pipe Production Line

1. Introduction

The coil car is an essential auxiliary device in an ERW (Electric Resistance Welded) pipe production line. It is specifically designed to lift and transport steel coils from ground level to the uncoiler mandrel with precision and stability. By automating the coil loading process, it significantly improves material handling efficiency, reduces manual labor, and enhances overall line productivity and safety.

2. Main Functions

Transfers steel coils from the floor to the uncoiler's center position
Enables accurate alignment with the uncoiler mandrel
Provides automatic positioning, lifting, and forward/reverse movement
Prevents impact, misalignment, and coil damage during loading
Supports fast coil changeover with minimal operator intervention

3. Structure Overview

Carriage Platform: V-saddle design ensures coil stability during movement
Mobile Base: Travels along a floor-mounted rail for linear motion and alignment
Lifting Mechanism: Typically powered by a hydraulic system to raise the coil to the mandrel axis
Drive System: Equipped with electric motor and hydraulic power unit for synchronized motion control
Safety Features: Includes travel limit switches, mechanical stops, emergency stop buttons, etc., for secure operation

Coil car for ERW Tube Mill

COIL CAR

4. Technical Specifications (Example)

Max Load Capacity: 10–20 tons (customizable)
Applicable Coil Width: 300–1500 mm
Lifting Height: 500–800 mm (adjusted per uncoiler height)
Movement Type: Electric travel / Hydraulic lift / Combined systems
Control Options: Local push-button panel / Line-integrated control / Remote operation available

5. Key Features

Heavy-Duty Design: Robust steel frame suitable for large and heavy coils
Smooth Operation: Hydraulic cushioning reduces shock and coil displacement
High Positioning Accuracy: Precision rail alignment and motion control
Wide Compatibility: Works with single-arm or double-head uncoilers and other coil handling systems
Easy Maintenance: Simple structure allows quick access to key components

6. Application Scope

The coil car is widely used in the coil-loading stage of ERW pipe production lines. It is especially suitable for handling medium to thick steel strips and heavy-duty coils. It can also be applied in other coil processing lines such as slitting, cold roll forming, and cut-to-length systems.