Wuxi YUTONG

Single Acting Cylinder Tubes are the one of the most important part in telescopic hydraulic cylinder working system.Single-acting telescopic cylinders use hydraulic power to extend the cylinder and gravity or mechanical force to retract the cylinder into its original position. This design is low-maintenance and compatible with most machinery. Double-acting telescopic hydraulic cylinders utilize unidirectional hydraulic power to extend and retract the cylinder. This telescopic cylinder design is best for heavy-duty applications.  these telescopic cylinders  have super processing requirements, and its inner surface roughness is required to be max Ra0.4 microns, and the requirements for coaxiality and wear resistance are strict. Generally, it is processed and produced by the principle of honing or rolling. As a experienced manufacturer of different kinds of telescopic cylinders, Wuxi YUTONG is very clear about  that the common materials of single acting cylinder tubes are ...

  ISO   h8 honed tube   also can be called h8 cylinder tube/ cylinder barrel . It is manufactured by   precision seamless tube   with very tight tolerances, fully prepared for use in hydraulic and pneumatic cylinders.The ST52 steel used in this tube is E 355 according to EN 10305-1.This type of tube is used in hydraulic and pneumatic circuits, the H8 tolerance both in diameter and roughness allow them to be ready-to-use tubes. CHEMICAL COMPOSITION STEEL GRADES NORM C % max. P % max. S % max. Mn % Si % max. E-355 EN-10305-1 0,22 0,025 0,025 1,6 0,55 MECHANICAL PROPERTIES STEEL GRADES NORM Rm min. (N/mm2) Re min. (N/mm2) A min.% Supply Conditions E-355 EN-10305-1 580 450 10 SR As one of the leading h8 honed tube suppliers and manufacturers, Wuxi YUTONG  has been supplying and exporting  St52 honed tube  and  cylinder barrel for almost 20 years. We produce honed steel tubes and  skived roller burnished tubes  used for hydraulic cylinde...