7" Adapter Sub with 4 1/2 API regular thread pin and 4 1/2 BECO box
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248 189 ₽
Описание
7"Adapter sub used with 7" drill pipe on rotary drill machines to connect drill pipe to a shock sub or rotary head. Pin end has a 4 1/2 API regular thread, and the box end has a 4 1/2 BECO thread; the total effective length is 7 1/2".