GB/T 16950-1997 in English

《GB/T 16950-1997金刚石岩心钻探钻具设备》由TC93（全国自然资源与国土空间规划标准化技术委员会）归口，主管部门为自然资源部(国土)。
本标准规定了金刚石岩心钻探钻孔深度在1500m以内,适用于不同地层的单层岩心管、多种设计的双层岩心管以及钻杆、套管的型式、尺寸、主要机械性能、连接螺纹等技术内容。

Scope

This standard specifies the type, size, main mechanical properties, connecting threads, etc. technical content. Drilling tools using other rock breaking tools can also be used as a reference. This standard includes the following contents: --Single-layer core pipe; --M-type double-layer core pipe; --T-type double-layer core pipe; --P-type double-layer core pipe; - Bushings, bushing accessories and connection conditions.