8 inch 219mm ERW Tube Mill Suppliers High Performance Pipe Factory in China

Looking for reliable China suppliers? Our factory provides an 8-inch ERW Tube Mill featuring modular design and CNC adjustment. This high-precision equipment ensures stability for thick-walled steel pipes with superior load-bearing capacity and high-response alloy steel components.

Product Details

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Product Details

The 8-inch (219mm) ERW Tube Mill is a high-performance industrial solution designed for the precision manufacturing of medium-to-large diameter straight seam welded pipes. Engineered for versatility, this equipment is ideal for producing essential components such as solar bracket piles, ground mounting posts, and structural construction frames, offering a comprehensive production range from 2 inches (50.8mm) up to 8 inches (219mm).

Equipped with advanced molding options, including conventional round-to-square, direct square, and FFX flexible molding technology, this system ensures maximum adaptability for diverse industrial requirements. By integrating high-frequency welding with precise sizing and cutting units, the mill delivers superior structural integrity and dimensional accuracy, making it a cornerstone for renewable energy and municipal engineering projects.

Detailed Parameters

Tube Diameter RangeΦ89mm – Φ219mmWall Thickness Range2.0mm – 8.0mm
Strip Width Range280mm – 700mmMaterial Strength200 – 600 MPa
Line Speed15 – 40 m/minCutting Accuracy±1.5mm
Forming MethodRound-to-Round / FFX / Round-to-SquareControl SystemSiemens PLC + HMI
Total Power400 – 600 kWOperation ModeManual / Automatic switchable

Key Advantages


Superior Weld Integrity

Utilizes solid-state HF welding (200-600kHz) for seamless, high-strength joints with adjustable power output.


High Production Speed

Achieves line speeds up to 40m/min, significantly increasing throughput for large-scale industrial orders.


FFX Flexible Molding

Advanced FFX technology allows for rapid switching between round, square, and rectangular tube profiles.


Siemens PLC Control

Intuitive HMI interface with parameter memory for quick roller setup and precise synchronization.


Precision Sizing

Integrated sizing unit and straightener ensure strict adherence to diameter and shape tolerances.


Industry 4.0 Ready

OPC integration allows for seamless connection with MES systems for real-time production monitoring.

Product Gallery

Management Platforms

Auto Speed Control

Ensures perfect synchronization between the forming section and high-frequency welding speed.

Flying Saw Sync

Dynamic cutting control with servo synchronization to minimize length deviation.

Parameter Memory

Store configuration data for different pipe diameters to reduce setup time during changeovers.

Fault Alarm System

Real-time error detection and automatic stop triggers to prevent material waste and downtime.

OPC Integration

Compatible with MES/Industry 4.0 systems for smart factory data exchange.

Hydraulic Expansion

Prevents coil looseness via the Uncoiler, supporting weights up to 10T for stability.

Investment Return Comparison

Comparison MetricStandard Tube MillAdvanced ERW Mill
Production EfficiencyLow-Medium SpeedHigh Speed (Up to 40m/min)
Setup TimeManual AdjustmentPLC Parameter Memory
Material WasteHigher Edge BurrPrecision Flying Saw Cut
VersatilitySingle Shape OnlyRound/Square/FFX Flexible
Operational CostHigh Manual LaborAutomated Smart Control

Frequently Asked Questions

Q: Which industries are best suited for the 8-inch ERW Tube Mill?

It is ideal for steel construction (columns and brackets), renewable energy (solar support posts), oil and gas transmission, and municipal firefighting or drainage pipes.

Q: How does the FFX flexible molding technology work?

FFX technology allows the machine to switch between round, square, and rectangular profiles more efficiently than conventional mills, reducing the need for complete roller replacements.

Q: What causes weld seam cracks and how are they solved?

Cracks are typically caused by insufficient HF power or improper cooling. This is solved by increasing HF power and fine-tuning the internal/external water cooling system.

Q: Can this machine handle different material strengths?

Yes, the machine is designed to process raw materials with a strength range of 200 to 600 MPa, making it suitable for various grades of carbon steel.

Q: What is the accuracy of the cutoff saw?

The flying saw system provides a cutting accuracy of ±1.5mm, synchronized via servo control to ensure minimal length deviation at high speeds.

Q: Is the equipment compatible with Industry 4.0 standards?

Yes, the mill features OPC integration, allowing it to connect directly to MES systems for automated data tracking and smart production management.

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