一、管材规格系列人造金刚石钻探用管材包括钻杆、岩心管、套管等等,几年来通过大量的试验与生产实践,已初步形成了适应冶金地质特点的人造金刚石钻具及管材系列标准(草案),见表1.该系列标准(草案)有如下几个特 First, the pipe specifications Series Synthetic diamond drilling pipe, including drill pipe, core pipe, casing, etc., over the past few years through a large number of tests and production practices, has initially formed to meet the metallurgical geological characteristics of synthetic diamond drilling tools and pipe series of standards Draft), see Table 1. This series of standards (draft) has the following special