Hydraulic Cylinder for Coal MiningProduct SpecificationFeaturescustomer hydraulic cylinderBore Diameter2'-60'/50-1500mmRod Diameter1' - 60'/ ... ,etcDiamensional AccuracyH7-H11Bore RoughnessRa 0.4-1.6mmCoatinghard chromePurposeConstruction,metallurgical,mining,agricultural,forestry machinery,etcOEMYesMOQ1 PieceCertificatesISO9001,ISO/TS16949,ABS,AQA,API ...