Cross-over subs
Crossover sub acts for conversion and connection of drill stem component in petroleum, natural gas and geology drilling work.
It is used mainly for connecting of upper drill tools and lower drill tools during drilling operations. Cross-over sub is API standard Material is AISI 4145H chromium-molybdenum steel. We can offer Kelly cross-over sub, Drill pipe cross-over sub, Interim cross-over sub, Drill collar cross-over sub, Drill bit cross-over sub, Swivel cross-over sub, Fishing cross-over sub, etc.
It is used mainly for connecting of upper drill tools and lower drill tools during drilling operations. Cross-over sub is API standard Material is AISI 4145H chromium-molybdenum steel. We can offer Kelly cross-over sub, Drill pipe cross-over sub, Interim cross-over sub, Drill collar cross-over sub, Drill bit cross-over sub, Swivel cross-over sub, Fishing cross-over sub, etc.