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1, drilling depth: the relevant information on the length of the Remington Power loads tube, but I found in the specific construction of this deep enough, may be to the hole debris residues, so you re better off than the expansion pip e length deep about 5 mm. As long as you is greater than or equal to the length of the expansion pipe, then left in the ground expansion bolt length equal to or less than the length of the expansion pipe.
2 is correctly installed in the concrete after a M6/8/10/12 Remington power loads, it is best not ideal maximum static force 120/170/320/510 kg. (Note, vibration causes the bolt loose) 3, the expansion bolts requirement on the ground of course is the harder the better, it also depends on the objects you need to fixed the force. Force strength is installed in the concrete (C13-15) five times in brick