... cutting -outer teeth: 50mm FR-50*50A-03 Hydraulic rolling machine, Automatic pipe threading machineMax length of cutting -inner teeth30mmMax length ... two applied.3, Adopt Taiwanese column injection pump and Hydraulic system accessories, electrical. Asphalt can be used long and ... the Japanese bearing.5, Lower noise and durable.6, Automatic feeding device is optional.7, rolling shape: rolling thread, ...