PP pipe: Nominal diameter and outer diameter comparison standard
Thread Content
Dear gods: What is the outer diameter corresponding to the nominal diameter of PP pipe? GB/T18742 only contains data on the pressure level, wall thickness and operating temperature of PP materials, but no outer diameter comparison data was found. Can the outer diameter of PP be purchased in accordance with GB/T28708 (Regulations on the size selection of seamless and welded steel pipes for pipeline engineering)? The outer diameter of PP pipes should be another standard, right? Can you tell me the standard number, or provide a copy of the standard directly to Xiaosheng? Thank you again!
The valve management area is full of people who do this kind of thing, so you should be sure to ask.
I only know that the outer diameter of pp is different from that of steel pipe. The outer diameter of PP is larger, but I haven’t found the standard.
GBT18742 HG20539-1992 I found two standards
Yours is made of steel pipe, is it made of PP material?
Then I'll change the section and open a thread to ask.
This post was last edited by Baoji Chaosheng Titanium Industry on 2018-8-8 16:24. The outer diameter dimensions given in the GB/T18742 standard
Well, this is from GB/T18742. I looked it up but I have some doubts. According to the standard, the outer diameter of PP pipe is the nominal diameter. Because the data was too different from that of steel pipes, I was a little unsure. Later, I checked some information and found that the size specifications of plastic pipes such as PP, PVC, HDPE, etc. are expressed by the outer diameter (nominal diameter) * Wall thickness. Now it's confirmed, thank you for your enthusiastic help!
Now our company is planning to build a factory, but we haven’t found a design institute. I’m designing the PID alone. Later, I have to do equipment layout drawings, pipeline plans, comprehensive material table statistics, etc. It’s really overwhelming. It seems that we need to install a PDMS, otherwise the pipe axonometric drawings cannot be prepared. It is too troublesome to draw the axonometric drawings using CAD. Moreover, without three-dimensional piping, the pipes designed in the future will fight, collide with structural steel beams and other changes. The most important thing is that without three-dimensional piping, material statistics is the most painful.