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Hot Sale API Standard Non Magnetic Drill Collar Flex Nmdc. API Standard Compliance: Strictly abides by API 7-1, API 7-2, SY/T5144, and SY/T5146 standards. Comprehensive Certifications: Holds API, ISO 9001, ISO 14001, and ISO 45001:2018 certifications. 1-Year Warranty: Covers mechanical defects with free parts and labor for one year. OEM and ODM Services: Offers full customization, minor customization, and logo customization options. Advanced Testing: Equipped with domestic and overseas precision testing equipment for 100% inspection. High Bending Strength: Bending strength ratio ranges from 2.37:1 to 3.18:1 depending on specifications. Flexible Payment Terms: Accepts T/T, L/C, D/P, PayPal, Western Union, and small-amount payments.