Wait! There is a difference between Pipe and Tube?

Knowing the answer to this question and how to properly measure each will win you trivia championships!

管和管道不一样。简而言之,管道是一种用于携带液体和气体的容器。管用于汽车框架和建筑等结构项目。一旦知道了要下一步的内容,就可以弄清所需的大小。

管子is measured by an exact outside diameter (OD) and wall thickness.
管道is measured by a nominal outside diameter (also known as NPS or Nominal Pipe Size) and wall thickness.

管道时间表和重量

NPS是用于高压或低压的管道的北美标准尺寸。管道上的时间表编号与管道上墙壁的厚度有关。数量越高,墙壁越厚。因此,附表80管道比附表40管道更厚的围墙材料。附表号可以在两个不同大小的管道上相同,但实际的壁厚厚度会不同。例如,1英寸附表40管的壁厚为.133”。而2英寸的计划40管的壁厚为.145”。因此,管道上的底线是时间表编号将增加壁厚,并且壁厚基于NPS变化

The dimensions provided for tubing refer to the actual outside diameter. In other words, the actual physical OD of a tube is just the same as it's nominal OD. The size of a tube will keep the same OD no matter what the wall thickness is. For example, the actual outside diameter of 1¼″ pipe is 1.625″ - while 1¼″ tube has a true 1.25″ outside diameter.

Consequently, both the size of tube and pipe is measured by it's OD and the thickness.


管管04.06.2017

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