
High Efficiency Double Wall Drill Pipe for RC Drilling. High Efficiency RC Design: Double-wall structure ensures efficient reverse circulation, improving cuttings removal and borehole stability. Robust Alloy Steel Construction: Made from high-grade alloy steel with friction welding for exceptional torsional strength and wear resistance. Precision Leak-Proof Threads: 4.5 Remet threads are precision-machined to ensure tight, leak-proof connections and reduce loosening risks. Anti-Corrosion Protection: Features anti-corrosion and wear-resistant spray paint for reliable performance in harsh environments. Customizable Specifications: Supports customized lengths, diameters, and thread types to meet diverse project requirements. Strict Quality Control: 100% weld inspection and in-house heat treatment ensure optimum hardness and structural integrity. Versatile Application: Ideal for deep water well drilling, mineral exploration, and geological survey projects in various formations. ISO 9001:2000 Certified: Manufactured under strict quality guidelines with ISO 9001:2000 certification for consistent high quality.