>long shaft,linear shaft,fax shaft >Size:L 50~3000mm O.D 10~ ... , annealing, quenching, heat treatment and precision machining.Material:Carbon steel, alloy steel and stainless steel.Size:Huge size is preferable. Length: 50mm-3000mm ... parts etc.Accuracy:O.D. ±0.005mm. L. ±0.001mm Steel linear shaft