
P690 Non Magnetic Drill Collar. Non Magnetic Material: Made from high purity austenitic stainless steel with relative permeability < 1.001. Advanced Manufacturing: Forging process with CNC lathe, milling, roller burnishing, and laser cladding. Corrosion Resistance: High pitting corrosion resistant Cr-Ni-Mo-N-steel with special surface treatments. Comprehensive Testing: 100% magnetic and ultrasonic inspection meeting ASTM and API Spec 7.1 standards. High Mechanical Strength: Yield strength up to 150 ksi and tensile strength of 160 ksi achieved via cold-working. Customization Options: Customization available from samples and designs for complex collars. Quality Assurance: Manufactured under ISO 9001 certified Quality Assurance System with in-house lab. Technical Assistance: Expert support for manufacturability and design of complex nonmagnetic collars.