The outer force in the pipe can not apply to the expansion pipe.
管道中因各种因素产生的外力也不得作用于该伸缩器。
There are some difference in mechanics characteristics between plastic pipe and other metallic pipe.
塑料类管材同长期以来习惯应用的钢管等金属管道其力学特性有较大的区别。
In order to convenient welding, pipe and the connecting pipe steel is the same.
为了焊接方便，管件与被连接的管子的钢种是相同的。
Therefore, are used in high temperature steam pipe, water pipe.
因此，常被用在高温水蒸气输送管道、水煤气管道中。
When in use, a water pipe is connected with the connecting pipe.
使用时，将水管连接到连接管上即可。
When in use, a water pipe is connected with the connecting pipe.
使用时，将水管连接到连接管上即可。
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