... -100x100 steel bar thread Rolling Machine, steel pipe making machine,Nut formerRolling the largest diameter: 100MM Rolling minimum diameter: 10MM Rolling ... thread, textured, ruled, rolling light, cross knurling, roll bars, rolling groove, and roll-offQuality Process Certifications: ISO 9000-2001 Quality guarantee ... -100x100 steel bar thread Rolling Machine, steel pipe making machine,Nut former