steel bar thread rolling machine. Diameter:5-40mm Pitch:0.4-2.5mm Length:50-100mm FR40*100 thread rolling machine, ... Machine weight (approx): 1200 kgFollowing are features of Threaded Rolling Machines:1, Specialized for metal tubes designing, use triangle ... device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light, cross knurling, roll bars, rolling groove, and roll-offQuality ...