Common knowledge about steel pipes
Thread Content
May I ask: For seamless steel pipes with DN15 and outer diameter in Series 1, is it correct to represent them as ￠21.3×(wall thickness)? If it’s incorrect, are there any other ways to express it? I would appreciate it if the seniors could offer some guidance; I will certainly reward them with a high score.
The B series is generally represented in this way; it should also be fine to represent it in the A series style, as long as it’s clear to those who read it
This representation is correct, but generally it is also necessary to specify the standard number of the steel pipe as well as its material
The poster asked, “What is Series 1?” It should be Series A or Series B; the way they are denoted is similar, with the only difference being the outer diameter and wall thickness. The poster used the notation for Series B, while for Series A, the outer diameter of the pipe with DN15 is 22 mm.
For design purposes, you can refer to HG20553-93, which outlines the manufacturing standards as well as the specifications for welded and seamless steel pipes.