The Development Situation of the Drilling Rig Equipment 2019/10/15 The first development stage of drilling rig equipment--hand feed drilling rig equipment In 1862, Switzerland first invented the hand-mounted diamond bit, and designed and manufactured the world's ... DTH Hammer Drilling 2019/10/12 This method is suitable for drilling hard rock strata, and the borehole is not easy to deflect, so it is more advantageous when using in water-deficient areas. It can be used to drill hard rock and pe... Application of compressed air system in automobile painting production line 2019/01/10 Compressed air is an important energy resource in automotive coating process besides water, electricity, coal, oil, steam and natural gas. Improper use of compressed air system will increase vehicle c... Sales of construction machinery will grow steadily in the next three years 2019/01/10 In the first 7 months of 2018, sales of all kinds of construction machinery were rising, all year round. But how long can this boom take place? Through the analysis of several research institutions, i... Will the 35 million ton / year manufactured sand meet the needs of building sand every year? 2019/01/10 Due to restricted mining and forbidden mining in Dongting Lake and other regions, the price of construction sand in the middle and lower reaches of the Yangtze River has been rising. The factory price...
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