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Product Paramenters：
Customized according to customer needs
The Fully Locked KELLY BAR was first used by MAIT and IMT. It is a kind of drill pipe between machine lock and friction. It also has the functions of these two kinds of lock rods, but it is not as good as the separate functions of these two kinds of drill pipes. It is suitable for soft soil houses with a small amount of hard strata. It has the advantages of convenient pressurization and simple unlocking operation. At the same time, there are also shortcomings such as high failure rate and difficult maintenance
Product Paramenters：
Customized according to customer needs
The Fully Locked KELLY BAR was first used by MAIT and IMT. It is a kind of drill pipe between machine lock and friction. It also has the functions of these two kinds of lock rods, but it is not as good as the separate functions of these two kinds of drill pipes. It is suitable for soft soil houses with a small amount of hard strata. It has the advantages of convenient pressurization and simple unlocking operation. At the same time, there are also shortcomings such as high failure rate and difficult maintenance
