Duct branch is rich in natural form of uniform distribution, wall smooth, branch pipe and tube diameter on the transition to a flat.
导管分支丰富，形态自然，分布均匀，管壁光滑，分支导管与上一级导管管径过渡平缓。
2
The circular section concrete-filled steel tube structures have good performance because of uniform restraint of concrete provided by circular steel tube.
圆形截面钢管混凝土结构因为圆钢管对核心混凝土均匀的“约束”而具有良好的性能。
3
Therefore, the shape of water chamber is in favor of uniform distribution of cooling water volume in tube bundle.