With two and more than two jacks lifting an object at the same time, agricultural jack, jack total lifting capacity of not less than twice the load. When should someone lifting 30 tons jack unified command, ensure that the jack jacking consistent speed and force. 1 Make sure the required force (tonnage), suggested the use of hydraulic jacks tonnage is 20% higher than the load. 2. The body height and stroke according to the conditions required to select the appropriate body height and required travel 300 tons jack, jack, Texas aerospace hydraulic provided by Dezhou City aerospace hydraulic machinery plant. Dezhou City aerospace hydraulic machinery plant (www.sdhtyeya.com) strong, credible, in Dezhou hydraulic equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Texas Aerospace Hydraulic and you hand into the brilliant, for a better future!