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No.43,West Diming Street,Mudanjiang City,Mudanjiang,Heilongjiang,China China
Persona de contacto xie jie
Dirección No.43,West Diming Street,Mudanjiang City, Mudanjiang, Heilongjiang
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar
Drill Collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially dr
standard drill collar, spiral drill collar, non-magnetic drill collar, spiral non-magnetic drill collar
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