Standard: GB/T19228.1-2011
Unified Terminology：Nominal Diameter(DN, mm)｜Outer Diameter (GB Series Ⅱ, mm)
R = BSPT British Standard Taper Pipe Thread
Female Thread Tee (EU Standard)
| Nominal Diameter | Outer Diameter(GB SeriesⅡ) |
|---|---|
| DN15×15 | 18.00×R1/2 |
| DN20×15 | 22.00×R1/2 |
| DN20×20 | 22.00×R3/4 |
| DN25×15 | 28.00×R1/2 |
| DN25×20 | 28.00×R3/4 |
| DN25×25 | 28.00×R1 |
| DN32×15 | 35.00×R1/2 |
| DN32×20 | 35.00×R3/4 |
| DN32×25 | 35.00×R1 |
| DN32×32 | 35.00×R1¼ |
| DN40×15 | 42.00×R1/2 |
| DN40×20 | 42.00×R3/4 |
| DN40×25 | 42.00×R1 |
| DN40×32 | 42.00×R1¼ |
| DN40×40 | 42.00×R1½ |
| DN50×15 | 54.00×R1/2 |
| DN50×20 | 54.00×R3/4 |
| DN50×25 | 54.00×R1 |
| DN50×32 | 54.00×R1¼ |
| DN50×40 | 54.00×R1½ |
| DN50×50 | 54.00×R2 |