appearance, convenient operation, reliable the system, high efficiency work. It adopts PLC control, three power head can cutting simultaneously, can also cutting solely. Cutter can be installed with three tools, which can cut outside chamfer, end and fillet. It uses hydraulic lock, hydraulic feed, each power head has a slide forward, work into cutting and back fast technologymoves. Hydraulic feed can be adjusted continuously to diameter, wall thickness. Slide linear guide adopts rails, wear stable orientation, with its accurate and canonical product size to meet the relevant standards of the Tee-fitting process.