1、
Add sealed shim between the two flanges and then lock down the bolt. tighten up
安装时两法兰间需加密封垫片，然后均匀拧紧螺栓。密封，拉紧，拧紧
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2、
Add sealed shim between the two flanges and then lock down the bolt equably.
法兰间连接需加装密封垫片后再均匀拧紧螺栓.
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3、
4、
Add the sealed shim between the two flanges and then screw down the bolt.
两法兰连接中间需加密封垫片,然后均匀拧紧联接螺栓.
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