Command Tubular’s drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain mechanical properties as specified by API Spec 7-1.
Full mechanical and chemical mill test certifications are supplied with all drill collars. These mill test certifications guarantee a hardness range of 285 to 341 BHN and an impact value of 40 ft-lbs at room temperature, one inch below surface.
Manufacturer Part Number (MPN):
Top Product:Hexagonal or Square Kellys, Drill Pipe, Heavy Weight Drill Pipe
Industry:Industrial Components & Supplies, Industrial Products
Location:New Caney, TX