We offer honed tube.Hydraulic cylinder honed tubeseamless cylinder tube application: hydraulic cylinder, hydraulic jackstandard: gbt8713-88, iso4391-1980(e)steel grade: st52, st52.3, e355, s235, 20#, 45#, 16mn etcod size: 30 mm to1000mmmax length: 12 metersroughness (ra): 0.2 to 0.8 umstraightness: 0.5 mm1000mmtolerance ext: din 2391tolerance int: iso h7, h8, h9type: cold drawn, cold roll, honed, skived, burnishedconservation: anti rust oiled both inside and outside surface, plastic caps in both ends