pipe scale rich in carbonate 富碳酸盐管垢
Full-scale fatigue test of drill pipe and borehole tests of drill pipes containing defects prove the reliability of assessment methods and software posed in this paper.
通过钻杆全尺寸疲劳试验和含有缺陷钻杆的井下试验，证明了本文提出的评价方法和软件是可靠的。
The Udachny pipe. The scale of the work done by human hands is difficult to show in the photo or even video.
乌达奇内岩石筒。人工手工作业情景由于目标太小无法用照片或者视频呈现。
The enterprise mainly manufactures bolt cutters, pipe wrenches, captive hand tools most other pipeline products, including pipe clamp production scale ranks first in the country counterparts.
企业主要生产断线钳、管子钳、掳手极其它管道工具的系列产品，其中管子钳生产规模居全国同行之首位。
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