... :oil 5.application:machinery 1,about HAT60(55-7)two-way hydraulic arm cylinder body mateiral45steelStroke:840±2.0mmpiston ... methods· Imported cushion,sealing element,oil pipe and other components· Holds Many Patents· High quality, high reliability, high service life, ... service offered Design service offered Buyer serviced offered· We have two companies, and some parts of the hydraulic cylinder are ...