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Soil and Sandstone Core Barrel (PQ size)

In Inner Mongolia area of China, the ground formation is always very soft and abrasive and contains a mixture of sandstone and soil. It makes core recovery very difficult to use standard core barrels PQ. To solve this problem, JINSHI specially designed this PQ size (JS122) core barrel. Its unique tw…

(KT311mm KT216mm KT152mm)Extra large diameter and deep hole diamond core drilling tools

JINSHI designed and produced the special diamond core drilling tools for the "SONGKE SECOND PROJECT". The 4 years' scientific  project ends at 7018 meters depth and out of the 7018 meters, 4279 meters was diamond core drilling. The coring size started at 214mm and ended with 92mm. The core recovery …