... Pitch:0.4-2.5mm Length:50-100mm FR40*100 thread rolling machine, steel pipe making machine,pipe forming machineFR-40 ... accessories, electrical. Asphalt can be used long and no heating without cooling system.4, Use the imported Gimbal, lubrication system used ... .6, Automatic feeding device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light, cross knurling, roll bars, rolling ...