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API Spec 7-1 Oil Drilling Stabilizer/Drill Stabilizer O. D 17 1/2" AISI 4145h, Find Details and Price about Drill Stabilizer Drilling Stabilizer from API Spec 7-1 Oil Drilling Stabilizer/Drill Stabilizer O. D 17 1/2" AISI 4145h - Hebei Shitan Machinery Manufacturing Co., Ltd.