|
发表于 2012-12-13 09:05
|
显示全部楼层
来自: 中国江苏南通
参见ASME B31.1有说明。
A pipe is a tube with a round cross section conforming
to the dimensional requirements for nominal pipe size
as tabulated in ASME B36.10M, Table 1, and
ASME B36.19M, Table 1. For special pipe having a diameter
not listed in these Tables, and also for round tube,
the nominal diameter corresponds with the outside
diameter.
A tube is a hollow product of round or any other cross
section having a continuous periphery. Round tube size
may be specified with respect to any two, but not all
three, of the following: outside diameter, inside diameter,
wall thickness; types K, L, and M copper tube may
also be specified by nominal size and type only
pipe是圆的,tube 可以不不是。。 |
|