We use high quality materials in manufacturing of hydraulic cylinders , here is a list of materials: harde chromed plated bars , cylinder tubes ready for use , inner diameter h9 , cold drawn honed tubes , inner diameter h8 where the shaft starts from 12 up to 160. We manufacture hydraulic cylinders which are double- acting, single-acting and telescopic cylinders. The diameter of tube starts from 40 - 50 up to 200 - 240 mm