... Our quality management system strictly implement ISO9001:2008.Certified by the china classification society CCS.Reliable quality,reasonable price,prompt delivery ... ,Max cylinder diameter 1000mm,Max.stroke length up to 20M.The type of cylinder body material:45 steel(DIN C45\ASTM 1045 ... \BS 080M46),Q345(DIN st52),27SiMn and general stainless steel.The type of piston rod material:45 steel(DIN C45\ASTM 1045 ...