
Haoyu CNC Automatic Hydraulic Cylinder Bottom Girth Welder Circular Welding Machine. Automatic PLC Control: PLC controls whole machine with touch screen for easy parameter modification. Wide Workpiece Range: Handles diameters 80-300mm and lengths 300-2000mm with stepless speed regulation. Multi-layer Welding: Supports multi-layer continuous welding with preset and recall functions. Precision Oscillation: Features oscillating frequency 0-30 times/min and stroke 0-40mm for wide seams. 12-Month Warranty: Covers mechanical defects with free parts replacement for 12 months from Bill of Lading. Horizontal Welding Mode: Fixed torch with rotating workpiece ensures uniform and level weld seams. Digital Analog Control: Precise control of welding current and voltage for consistent quality. Low Failure Rate: Designed with good operating performance and reliable inverter speed adjustment.