Metis is the largest and professional supplier of anchoring products
Metis is the largest and professional supplier of anchoring products and has won great popularity around the world.
Self-drilling rock bolt, matched with good fittings, is made of seamless steel pipe with thick wall. In addition, surface thread-shaping techology is taken. With a bit at the anchor head, it is easy to cut through various rocks. With the continous international standard wave-shape thread, this anchor can be used to fill holes with help of drill bit.
With the high-strength coupling elongated by mechanical cutting technology, any length could be available. Therefore, drilling, grouting, and anchoring can be carried out at one time.
Precautions in the construction of hollow threaded bar
1.When the pipe is blocked,check the anchor bolt,injection pipe and grouting pump respectively.Before,the grouting pressure should be reduced so that it won't hurt anyone.
(2).When the boreholes are right on it's way and the stop-grouting plug has been installed,the boreholes should be fully filled with pore grout after the recovery of the pressure inside the boreholes to prevent grout from leaking.
(3).Don't beat the anchor bolt after the installation of anchor bolt,heavy things should not be suspended at the end of the bolt within 3 days.
(4).The end of anchor bolt is better to be welded with steel arch stand or steel grille ,so a common stess system can be formed.
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