- tube 和 pipe 的区别？ - 知乎
1 形状不同：tube有正方形管口的，有长方形管口的，也有圆形的；pipe都是圆形的； 2 韧性不同：tube有刚性的，也有紫铜、黄铜做的挠性tube；pipe都是刚性的，抗弯折； 3 分类方式不同：tube按外径和壁厚；pipe按壁厚代码pipe schedule和nominal diameter (欧标)=national pipe size (美标) 4 使用环境不同：tube用于
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