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阐述了研制深孔、特深孔应用的高钢级精密绳索取心钻杆用冷拔无缝钢管的技术思路,介绍分析了XJY950冷拔无缝钢管的材料选择和制造工艺优化过程,并对该产品的钻探应用提出了技术建议。
The technical ideas of cold drawn seamless steel pipe for high grade steel precision coring drill pipe for deep hole and extra deep hole are described. The material selection and manufacturing process optimization of XJY950 cold drawn seamless steel pipe are introduced. Drilling applications for this product made technical recommendations.