However, in the middle of 2021 years, the industry has improved a bit, and the market has begun to recover. In this way, Ranking also ushered in the peak sales season. It’s already halfway through October, and the warehouse has been emptied. On October 1st National Day, our workers are also working overtime for customers to produce.
History of Tricone Bit
It was invented in Ireland in 1847 by James J. Brett who founded Bits Limited – The cornerstone of our business today.
In 1909, Howard R.Hughes, an American, obtained the first patent of tricone bit. At that time, the rotary drill used a scraper bit, which could only hit the very soft ground. The hard ground could not be scraped, so it could only use a rotary drill bit.