... teeth: 50mm FR-50*50A-03 Hydraulic rolling machine, Automatic pipe threading machineMax length of cutting -inner teeth30mmMax ... length):850mm/1300/1800Following are features of Threaded Rolling Machines:1, Specialized for metal tubes designing, use ... .6, Automatic feeding device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light, cross knurling, roll bars, rolling groove, ...