首页>
外国专利>
A method for setting of roof bolts, pins, transactions or the like in a mountain factory bars, etc.
A method for setting of roof bolts, pins, transactions or the like in a mountain factory bars, etc.
展开▼
机译:一种用于在山区工厂的酒吧等中设置屋顶螺栓,销钉,交易等的方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
Strengthening rods are positioned in mine levels and public works by introducing into a long bore made in a wall or other surface to be strengthened, a thermosetting resinous composition and a metal rod of substantially the same length as the bore, and rotating the rod at a rotation speed which causes it to heat up by friction with the composition to the hardening temperature of the composition so as to cause the rod to be sealed in the bore by the hardening of the composition.
展开▼