... Pitch:0.4-2.5mm Length:50-100mm FR40*100 thread rolling machine, steel pipe making machine,pipe forming machineFR- ... feeding device is optional.7, rolling shape: rolling thread, textured, ruled, rolling light, cross knurling, roll bars, rolling groove, and roll- ... warranty after Customer accepts the inspection for machinery’s trial operation.ClaimsCustomer has rights to claims if there is quality ...