... of cutting -outer teeth: 50mm FR-50*50A-03 Hydraulic rolling machine, Automatic pipe threading machineMax length of cutting - ... when by rolling.2, Fixed Roll/ Pass two applied.3, Adopt Taiwanese column injection pump and Hydraulic system accessories, ... device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light, cross knurling, roll bars, rolling groove, and roll-offQuality ...