Based on the plant fuild properties and the job site weather condition, tracing is not required for instrument and measuring piping.
根据本装置仪表所测物料的特点及当地气候条件，仪表及测量管路不需伴热。
Needle valve: it is an important instrument measuring piping system components, mainly cut-off valve and ball valve, its purpose is to open or cut off access by pipeline.
针型阀：是仪表测量管路系统中重要组成部分，主要有截止阀和球阀，其功用是作开启或切断管道通路用。
A measuring and locating system using microcontroller for cleaning piping is introduced in the paper.
介绍了一种用单片机控制的管道清洁检测及定位系统。
It was pointed out that measuring the thickness of the piping in the fix position and using computer in administration were the important aspects of the normal administration of process piping.
指出了管道定期定点测厚和计算机管理是工业管道规范化管理的重要内容。
It was pointed out that measuring the thickness of the piping in the fix position and using computer in administration were the important aspects of the normal administration of process piping.
指出了管道定期定点测厚和计算机管理是工业管道规范化管理的重要内容。
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