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Directional Drilling Tool Distributors API Standard Oilfield Non Magnetic Drill Collar P550 P530 Drill Collar. API Certified Non-Magnetic Collar: P550 material drill collar meeting API 7-1/7-2 and ISO9001 standards for oilfield use. Wide Size Range Available: OD from 79.4mm to 279.4mm with various NC and REG thread connections. Full Set Drilling Tools Supply: Supply drill pipe, tricone/PDC bits, DTH hammers, and rigs alongside drill collars. Flexible Customization Options: Supports customized logo, packaging, and graphic design with MOQ of 1 piece. 1 Year Warranty & QC: Free replacement for quality issues, 100% inspection before shipping, and video inspection provided.