... :ST52,ST45,OR 27SiMn rod:#45 chrome-plated each cylinder is tested fast delivery time 1.used for dump ... etc,middle-duty,2.total length and diameter:978mm*2523.single strock:690mm4.port diameter:M20*1.55.pin hole: ... hole:220mm7.seal,see attached pictureinspection: length,leak,pressure inspection Piston Hydraulic Cylinder used for machinery and vehicle for Farming,Construction,forestry,engineering ...