Coal mine hydraulic support columns, jacks, designed for coal mine hydraulic support selected. Can produce double adjustable, single scale, with sensor bracket columns and jack. Is suitable for the ore under all kinds of bad working environment and other outfit and acceptance, MT97 MT313-92-92 standards, can also according to user requirements by European standards, production of high-end products.

Features: 1. The coal mine hydraulic support columns, jack has: anti-corrosion, wear-resistant, reliable operation, the holding stability, high safety coefficient.

3. Live column and secondary cylinder outer surface can be used milky white chrome + hard chromium, tin bronze + hard chromium, can also be coated metallized ceramic or ceramic coating and nitriding and other ways. Cylinder inside and outside surface of the tin bronze plating process can be applied.

Application: widely used in the industries of coal mine of hydraulic support, are key components in compound mining equipment.