
Nmdc Non-Magnetic Spiral Drill Collar Drill Collar. API Certified Manufacturing: Strictly abides by API 7-1, API 7-2, SY/T5144, and SY/T5146 standards with API logo usage rights. 1-Year Warranty Coverage: Includes free replacement for quality issues and timely after-sale assistance. OEM and Customization Available: Offers customized logo, packaging, and graphic customization with a minimum order of 1 piece. High Bending Strength: Bending strength ratios range from 2.37:1 to 3.18:1 across various models. ISO and HSE Certified: Passed ISO9001 quality management, ISO14001, and HSE management system certifications. Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, Western Union, and small-amount payments. Fast Delivery Time: Normal delivery within 10-15 days depending on purchasing quantity.