The traditional design criteria for bolted flanged connections was based on the strength failure, which cannot evaluate in quantity the tightness of flange joints.
传统的法兰设计依据强度失效判据，不能定量估计法兰接头的紧密性。
All expansion joints shall have bolted flange-to-flange type connections on both sides of expansion joint for removal of complete unit. Minimum flange thickness shall be 6 mm.
所有的伸缩接头(膨胀节)都应当采用法兰栓接。法兰的最小厚度为6毫米。
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