single&doulble telescopic column hydraulic support coal mining made in China

telescopic column hydraulic support coal mining       Company overview:   shandong wantong hydraulic machinery co.,ltd is one of the biggest hydraulic cylinder manufacturer in China, specialized in design, R & D and manufacturing of hydraulic machinery products etc.         Product display:          Single telescopic column of hydraulic support is a part which joins the beam and base, bearing the load of crown plate. It is the main load bearing part, including two forms: all-hydraulic and mechanically lengthening.            Double telescopic column of hydraulic support is a part which joins the beam and base, bearing the load of crown plate. It is the main load bearing part, including two forms: all-hydraulic and mechanically lengthening.     Hydraulic support lifting jack is the main weight-bearing element which undertakes the movement of the hydraulic support and each part. The product is mostly single telescopic, double-act, piston type hydraulic cylinder, widely used in the hydraulic support for traction, side thrust, protection and assistance, balance, support adjustment, and etc.   Produce line:   quality guarantee system:     Our company has abundant technical force and perfect testing means. By making wide technical and business cooperation with many related enterprises, universities, colleges and institutes both at home and abroad, and employing senior engineers and software engineers, we have greatly strengthened and improved our designing, processing, and testing abilities.        Our certificate: safety certificate of approval for mining products     ISO9001