thread bigger than the pipe it is made on !?
thread bigger than the pipe it is made on !?
(OP)
For instance
NPS 1 inch (DN 25) having outside diameter 33.4 mm will have BSPP thread OD 33.25mm;
NPS 2 inch (DN 50) having outside diameter 60.33 mm will have BSPP thread OD 59.61mm;
and so on.
But how come that NPS 2 1/2 inch (DN 65) having outside diameter 73.03 mm could (allegedly) have BSPP thread OD 75.18 mm !?
NPS 1 inch (DN 25) having outside diameter 33.4 mm will have BSPP thread OD 33.25mm;
NPS 2 inch (DN 50) having outside diameter 60.33 mm will have BSPP thread OD 59.61mm;
and so on.
But how come that NPS 2 1/2 inch (DN 65) having outside diameter 73.03 mm could (allegedly) have BSPP thread OD 75.18 mm !?





RE: thread bigger than the pipe it is made on !?
prognosis: Lead or Lag
RE: thread bigger than the pipe it is made on !?
DN OD BSPP
6 10.29 9.73
8 13.72 13.16
10 17.15 16.66
15 21.34 20.95
20 26.67 26.44
25 33.4 33.25
40 48.26 47.8
50 60.33 59.61
65 73.03 75.18 Why this size stands out from the pattern indeed contradicting "common sense", so to say?
RE: thread bigger than the pipe it is made on !?
RE: thread bigger than the pipe it is made on !?
nom·i·nal
[nom-uh-nl] adjective 1. being such in name only; so-called; putative: a nominal treaty; the nominal head of the country.
prognosis: Lead or Lag
RE: thread bigger than the pipe it is made on !?
Nominal mm pipe sizes are based on arbitrary almost-metric equal "names" for actual ANSI/STD pipe diamters "translated" into near-metric equivilents "stated" diameters.
That is, a 100 mm "pipe" is really a 4 inch pipe, which isn't 4 inches diameter anyway.
RE: thread bigger than the pipe it is made on !?
RE: thread bigger than the pipe it is made on !?
"That which cannot be, therefore is not" Simple!
prognosis: Lead or Lag
RE: thread bigger than the pipe it is made on !?
Anyway, Merry Christmas !
RE: thread bigger than the pipe it is made on !?
Check british standard and DIN pipe OD's,
where did You get the 73.03mm?
Greetings
RE: thread bigger than the pipe it is made on !?
RE: thread bigger than the pipe it is made on !?
RE: thread bigger than the pipe it is made on !?
RE: thread bigger than the pipe it is made on !?
We like to avoid it in new processlines-situations, but there are still many pumps and other equipment with
2.5" connections.
Here the table with difference in BS and USA pipe
http://www.marylandmetrics.com/tech/pipecomp.htm