... steel because of:Better machinability - up to 3 times faster with better chip control (no more long, tangled, sharp chips ... Quieter due to vibration damping30-70% material saving compare with solid bar for hollow partsMachined parts in these and other ... 38mm Application fields: FieldPart name machine toolsleeve ,upright column ,clamp ring Oil and Gasguide sleeves ,sealing ring, sliding sleeve ...