MW2300 friction pillars friction metal pillar, MW2900 friction pillar, the pillar mining friction, friction metal pillar Shandong Octagon for single prop manufacturer, producing friction pillar in the early resistance, shrinkage can be widely used in mining and other industries large . Specifications Model height working resistance shrinkage live under the weight of the column maximum and minimum early termination resistance barrier MW2300 / 300 2300 1322 250 350 57 400 MW2600 / 300 2600 1502 200 300 62 400 Octagon Mining Machinery Co., Ltd. mainly produces hydraulic prop, U-shaped cards Lan, the card view, π-beams, metal roof beams, hinged roof beams, hydraulic prop control, lift column Phone: 0537-2164096 Fax: 0537-2280553 Mobile: 13295479531 Manager: Chen QQ: 2462697944