End Connections - choice of raised face smooth finish or ring type joint for piping flexibility.

连接端口-根据管道特点选择凸面光滑表面或环连接端口。

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End Connections - choice of raised face smooth finish or ring type joint for piping flexibility.

连接端口-根据管道特点选择凸面光滑表面或环连接端口。

youdao