Обсадная колонна Tongs are essential tools in oil operation to make up and break out the screws of casing and casing coupling in the drilling operation. Тип B Обсадная колонна Tongs are also know as HT 50 Обсадная колонна Tongs.

Extended Обсадная колонна Ключ is capable of marking up or breaking out the screws of casing and casing couplings in drilling operation.