1、由多波形波纹管一次成型而成，再于外套筒连接一体，充分保护波纹管，适用于埋地场合。
2、主要吸收轴向位移，具有补偿量大、保温效果好、残余介质可以排除等优点。
【七】
1. This expansion joint are made by more corrugated (longer bellows),then welded with a external cover to become a external pressure bellows. The cover can protect the bellows to avoid outside damaged. This is very suit able to use on underground pipe.
2. This expansion joint can absorb a very large axial movement and more stability on a high pressure system .it’s easy to cover the temp.isolating material for keeping energy. |
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