Hydraulic screw for roof fixing MYT series hydraulic roof anchors for anchoring ceilings in walkways It is driven by hydraulic system and has the characteristics of reliable performance and simple equipment.  It is mainly used for drilling holes in mine tunnel and tunnel, and screwing roof in coal tunnel. Due to its large torque, high rotational speed and low noise, MYT series hydraulic roofing bolts are widely used in various geological and environmental conditions. The hydraulic bolder has been recognized as a scientific and technological achievement in Hebei Province. Contact us, we speak Ukrainian, Polish and English. Tel.:/ WhatsApp / Telegram: + (48)733-275-085, Tel.+ (48 )660-284-220; Fax: +(48 )32-240-17-13 Marketing Department Inspector Sviatoslav Makieiev Company Email: