When selecting pumps, it is inevitable that we discuss pipelines (most often discharge pipelines). To ensure we understand each other, we must use the same terminology. For some people, a 50-size pipe means PE50 (50 mm outside diameter); for others, DN50 (e.g. stainless steel Ø60.3x2); and for yet others, approximately 50 mm inside diameter (i.e. PE63x5.8), because this is what we use to calculate pipeline losses. Below, we present a table of typical pipes made from different materials and conforming to various metric and imperial standards. During your conversation with a consultant, please provide the exact diameter of the pipeline being discussed.
|
DN |
Inches |
DIN |
ISO |
PE |
|
6 |
⅛” |
- |
10.00 mm |
- |
|
8 |
¼” |
- |
13.50 mm |
- |
|
10 |
⅜” |
14.00 mm |
17.20 mm |
PE16 |
|
15 |
½” |
20.00 mm |
21.30 mm |
PE20 |
|
20 |
¾” |
25.00 mm |
26.90 mm |
PE25 |
|
25 |
1” |
30.00 mm |
33.70 mm |
PE32 |
|
32 |
1¼” |
38.00 mm |
42.40 mm |
PE40 |
|
40 |
1½” |
44.50 mm |
48.30 mm |
PE50 |
|
50 |
2” |
57.00 mm |
60.30 mm |
PE63 |
|
65 |
2½” |
76.10 mm |
76.10 mm |
PE75 |
|
80 |
3” |
88.90 mm |
88.90 mm |
PE90 |
|
100 |
4” |
108.00 mm |
114.30 mm |
PE110 |
|
125 |
5” |
133.00 mm |
139.70 mm |
PE140 |
|
150 |
6” |
159.00 mm |
168.30 mm |
PE160 |
