产品型号QZPB
口径QDN200-DN4000
工作压力Q?.25-4.0Mpa
性能特点Q该膨胀节的二端各有一个工作LU管Q中间有一个^衡LU管Q膨胀节通过受力构gQ舌或拉杆Q来承受内压推力Q因此管pd需中间固定支架。该膨胀节只能吸收u向位UR?/div>
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