ring pipeline

Test method for ring bendability of pipeline coatings

管道防腐层环状弯曲性能试验方法

High Integrity Shutoff gate valves can be used for hot tapping or in pipeline services where a soft pig is used if the seat ring installation lugs are removed.

高度完全关闭闸阀可以用在热水龙头，或拆卸阀座环安装吊耳后，用在采用软铁块的管路中。

This paper presents a general design scheme of robot for checking in-use oil pipeline, and focuses on design of main component such as selection of electric motor and design of searching unit dish, slip-rings, high-pressure sealing ring and universal joints. Calculation results are provided.

现提出了检测机器人总体设计方案，叙述了主要零部件的设计，提供了计算结果.重点说明了电动机的选择、探头盘的设计、滑环的研制、高压密封件与万向节的设计与制造等。