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介绍了高强度B19钻杆的选材、试制、试验情况.该钻机不但具有良好的耐磨性,而且抗弯能力强,为旋转式钻机在硬岩中推广应用创造了有利条件.
The selection, trial production and test of high strength B19 drill rod are introduced.It not only has good wear resistance but also has strong bending resistance, which has created favorable conditions for the popularization and application of rotary drilling rig in hard rock.