Non Magnetic | Alloy Steel
OSS Drill Collars are available in lengths of 5, 10, 15, 20, 30 and 31 feet and in nominal sizes ranging from 3½” to 14”, while other sizes are available on request.
OSS Non-Magnetic drill collars are manufactured from heat-treated material for optimum strength and ductility in the critical threaded surface. The collars are made from selected bars of Chromium Manganese Austenitic stainless steel with chemistries specially formulated for down-hole tools.
Our Steel Drill Collars are manufactured from Chromium Molybdenum alloy steel conforming to AISI 4145 H Modified specification, fully heat treated and supplied in accordance to A.P.I. Spec. 7-1.
Material certificates, Certificates of Conformity and 3rd party inspection report will be furnished to our customers for traceability.