... ---σb≥1200Μpa,δ≥2%,ak≥35J/mm23.Gray Cast Iron Pipe/bar(ISO:150/200/250/300/350) ---Matrix: ferrite+pearlite ... as cylinder liner,piston ring,ADI bushing,sealing ring,suction pipe etc. By using our profile, the workinglife of our ... precise manufacturing. Application fields: FieldPart name machine toolsleeve ,upright column ,clamp ring Oil and Gasguide sleeves ,sealing ring, sliding sleeve Industrial ...