Din Flanges
Din Flanges
(OP)
I am working on fitting new air compressors to an existing system. On the drawing for the new compressors i have flanges DIN 2635 ND 40 C 32 - C 38, C28.8 and DIN 2633 C 32. ND is the pressure rating, C 32 - C 38 refers to the max OD of the pipe and C 28.8 the material. Is there a web site that will give me information as to what this material is? Also with the second flange the only information is DIN 2633 C 32, What does the C 32 refer to? ie size of pipe or material. Again is there a web site that will explain these abbreviations to me.
Many Thanks
Tom
Many Thanks
Tom





RE: Din Flanges
Probably it is a PN40 (Nominal pressure rating 40 bar) but perhaps they used "Nenndruck = ND".
This DIN norm is for Welding neck Raise face flanges WNRF. The "C" is used some times to identify the sealing face ( C= Raised face).
32 and 38 are probably the diameters 32=1 1/4" and 38 1 1/2"
link: http://www.stuess.de/index.html
use search function "VSF-PN40"
Still: ask for more information, the worst errors start in the interfaces.
Kind regards
RE: Din Flanges
for sure i can say that that ND 40 is the nominal pressure for the flange equivalent PN 40 responds ANSI class 300. C32- C38 means chapter 32-38. C22.8 means forged steel DIN No 1.0460 or ASTM A-105.
The diameters according to DIN are the following:
1/2" - DN15; 3/4" - DN 20; 1" - DN25, 11/4" - DN32, 11/2" - DN40, 2" - DN50; 3" - DN80; 4" - DN100 ....
RE: Din Flanges
ND is an old version for DN.
The material in standard CS flange is RSt 37.2 with carbon<= 0.20%.
RE: Din Flanges
RSt 37.2 is limited 120 deg C at lower pressures.
RE: Din Flanges
Regards
Tom