In light of the problems occurred in manufacturing the high-pressure pipeline unions, the authors propose to treat the union by direct quenching through the use of the residual heat of forging.
针对石油钻采高压管线连接活接头生产中的问题，提出利用锻造余热直接淬火的形变热处理工艺。
The pipeline of the invention has high heat resistance, good flexibility, and has much better resistance to pressure compared with conventional plastic pipes under the same service temperature.
本发明的管道具备高耐热性、良好的柔韧性，并在同等的使用温度下与常规塑料管材比较有更优异的承压能力。
The outlet of the liquid helium heat sink pipeline is provided with a pipeline regulating valve for regulating the flow rate and pressure of the pipeline.
液氦热沉管路出口处安装有管路调节阀，用于调节管路流量和压 力。
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