
High Strength Geological Thick-Walled Wireline Core Diamond Drill Rod. High Strength Material: Made from XJY850/30CrMnSiA seamless steel with heat treatment for superior toughness. Wide Size Compatibility: Available in Q, WJ, W, and Metric series including AQ, BQ, NQ, HQ, PQ sizes. OEM/ODM Customization: Supports logo printing and full customization based on client samples or designs. ISO Certified Quality: Manufactured under ISO 9001:2000/2008 standards with 100% finished product inspection. Low MOQ & Free Samples: Minimum order quantity is just 1 piece; free small value samples available for testing. Comprehensive Technical Support: Provides technical solutions, on-site training, and tele-consulting services. Reliable After-Sales Service: Free spare parts for manufacturer-caused issues; charged parts for user errors. Professional Manufacturer: Established since 2008 with advanced CNC and automatic assembly production lines.