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Factory Direct Carbon Steel High Frequency ERW Pipe Making Machine. Customizable Pipe Shapes: Supports Round, Square, Rectangle, and Oval pipe shapes. Customizable Voltage: Voltage options include 380V, 415V, 420V, and 440V. High Production Efficiency: Welding speed reaches 15-40m/min with 800kw high frequency power. 100% Quality Inspection: Every machine undergoes testing running before packing for shipment. ISO 9001 Certified: Quality control complies with ISO 9001 standards. Lifetime Technical Support: Provides online technical support and overseas services by skilled technicians. OEM/ODM Service: Experienced team available for custom designs and production plans. Flexible MOQ: Minimum Order Quantity is just one set.