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API 7-1 Standard spiral drill collar
API spiral drill collar
We could provide you Drill Collar with positive price and fine deliver time.
API 7-1 Standard spiral drill collar
as per API Spec7Material: AISI 4145H Alloy Steel and Non-magnetic materialOD: 3-1/8"~11" Length: 10"~31"
API 7-1 Standard spiral drill collar