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200kW High Frequency HF Welder for ERW Tube Mill China Factory Suppliers

Looking for a reliable 200kW High Frequency Welder? As leading China factory suppliers, we provide advanced solid-state HF welding systems for ERW tube mills to produce high-quality steel pipes with maximum efficiency.

Product Details

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Product Details

The 200kW High-Frequency (HF) Welder is a high-performance industrial power system specifically engineered for ERW (Electric Resistance Welding) tube mills. By utilizing advanced high-frequency electric currents, this system efficiently joins the longitudinal seams of steel pipes, making it an indispensable component for producing round, square, and rectangular steel tubes with exceptional structural integrity.

Designed for heavy-duty applications, the 200kW capacity allows for the processing of larger diameter pipes (typically up to 219mm) and thicker wall dimensions. Featuring a state-of-the-art solid-state design with IGBT or MOSFET semiconductors, it ensures maximum energy efficiency, stable heat distribution, and a minimal heat-affected zone (HAZ) for superior weld quality.

Detailed Parameters

Rated Output Power	200 kW	Output Frequency	150–400 kHz (Adjustable)
Input Voltage	380V / 415V ±10%, 3-Phase	Power Efficiency	≥ 85% (Solid-State)
Cooling Method	Water Cooling (Generator/Coil)	Water Pressure	≥ 0.2 MPa (Rec. 0.3 MPa)
Water Flow Rate	60–80 L/min	Max Welding Speed	40–60 m/min
Control System	Digital PLC + HMI Touch Screen	Working Ambient Temp	0–40°C

Key Advantages

Superior Weld Strength

High-frequency current creates a clean, forged joint with minimal HAZ, ensuring maximum pipe durability.

High Production Speed

Supports line speeds up to 60m/min, significantly increasing your daily manufacturing throughput.

Solid-State Efficiency

IGBT/MOSFET technology reduces power waste and improves system reliability compared to old tech.

Intelligent PLC Control

Digital HMI interface allows for precise power tuning and real-time fault monitoring and display.

Versatile Material Support

Optimized for carbon steel, mild steel, galvanized steel, and stainless steel applications.

Stable Thermal Mgmt

Integrated high-flow water cooling system prevents overheating during continuous 24/7 operation.

Product Gallery

Management Platforms

HF Power Generator

The core unit utilizing solid-state modules to generate stable, high-frequency welding current.

Matching Transformer

Optimizes impedance between the power source and the welding load for maximum energy transfer.

Induction Coil System

Precision-engineered coils that transfer HF current directly into the pipe seam area.

Ferrite Impeder Rods

Internal rods that concentrate the current at the weld edges to ensure deep penetration.

Water Recirculation

Pressure-regulated cooling unit ensuring thermal stability for the generator and transformer.

PLC Control Cabinet

Centralized digital interface for power level adjustment and automated load tracking.

Investment Return Comparison

Feature	Traditional HF Welder	Solid-State 200kW HF Welder
Energy Efficiency	Low (High Heat Loss)	High (≥ 85% Efficiency)
Maintenance Cycle	Frequent (Vacuum Tubes)	Low (Semiconductor Based)
Weld Consistency	Manual Adjustment	Automatic Load Tracking
Production Speed	Limited by Heat Load	High Speed (up to 60m/min)
Operating Cost	Higher Energy Bills	Reduced Power Consumption

Frequently Asked Questions

Q: What is the maximum pipe diameter a 200kW HF welder can handle?

Typically, a 200kW HF welder is suitable for larger diameter pipes, often reaching up to 219mm or more, depending on the wall thickness and material type.

Q: Which materials are compatible with this ERW welding system?

It is highly versatile and compatible with mild steel, carbon steel, galvanized steel, and various grades of stainless steel.

Q: Why choose a solid-state welder over traditional designs?

Solid-state welders use IGBT or MOSFET technology, which offers higher energy efficiency, better stability, and significantly lower maintenance costs.

Q: What are the cooling requirements for the 200kW HF welder?

It requires a stable water cooling system with a recommended pressure of 0.3 MPa and a flow rate between 60–80 L/min to prevent overheating.

Q: How does the induction coil differ from contact welding?

Induction welding is non-contact, providing a cleaner process, whereas contact welding can be more efficient for very thick-walled pipes.

Q: Can this welder be integrated into an existing automated production line?

Yes, the digital PLC control system is designed for seamless integration with most industrial PLC and automation frameworks used in tube mills.

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