Tools for rock-drilling soil with working part of sintered metal. pin drill bit designed for drilling pin holes in the monolithic rocks and ores, but also for the rock breaking during the drilling of blast holes submersible pneumatic
1) machine explosive rm-3-1 - 1 piece. it is designed to determine breaking load and elongation at break when tested textile yarns in accordance with the gost 6611.2-73. the maximum test load of 30 n. this product is available in the replenishment of the authorized
Parts of drilling or sinking machinery. drilling rod steel stupenchatoyformy threaded ends of drill used in sotave stanka.prednaznachena amplification to create an axial torque and transmitting the rock-breaking tool when drilling with