China API Spec 7-1/7-2 AISI 4145h Oil/Gas/Water Drilling Stabilizer/Drill Stabilizer O. D 444.5mm, Find details about China Drill Stabilizer, Drilling Stabilizer from API Spec 7-1/7-2 AISI 4145h Oil/Gas/Water Drilling Stabilizer/Drill Stabilizer O. D 444.5mm