Expansion joint: to meet the deformation of foundation, expansion and construction requirements play, prevent play a change in temperature in transverse crack produces.
伸缩缝：为适应地基变形，管身伸缩及施工要求，防止管身在温度变化时产生横向裂缝。
Expansion joint: to meet the deformation of foundation, expansion and construction requirements play, prevent play a change in temperature in transverse crack produces.
伸缩缝：为适应地基变形，管身伸缩及施工要求，防止管身在温度变化时产生横向裂缝。
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