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Oil Drill Collar 6 1/4"-Nc46 with API Spec 7-1
Oil Drill Collar 6 1/4"-Nc46 with API Spec 7-1
AISI 4145h String/Near-Bit Drill Stabilizer O. D 444.5mm with API Spec 7-1
AISI 4145h Water Well Drilling Stabilizer/Drill Stabilizer O. D 444.5mm with API Spec 7-1
AISI 4145h Water Well Drilling Stabilizer/Drill Stabilizer O. D 444.5mm with API Spec 7-1
API Spec 7-1/7-2 AISI 4145h Drilling Stabilizer/Drill Stabilizer O. D 444.5mm
