standards
- API Std 650 - Standard for Welded Tanks for Oil Storage
API Std 650 - Flush-type Shell Connection (mm)
| |||||
|---|---|---|---|---|---|
| Class 150
Nominal Height of Flange Size (NPS) | Height
of Opening
\(h\) | Width
of Opening
\(b\) | Arc Width
of Shell Reinforcing Plate \(W\) | Upper Corner
Radius of Opening
\(r_1\) | Lower Corner
Radius of Shell Reinforcing Plate \(r_2\) |
| 8 | 200 | 200 | 950 | OD of 8 NPS [a] | 350 |
| 12 | 300 | 300 | 1300 | OD of 12 NPS [a] | 450 |
| 16 | 300 | 500 | 1600 | 150 | 450 |
| 18 | 300 | 550 | 1650 | 150 | 450 |
| 20 | 300 | 625 | 1725 | 150 | 450 |
| 24 | 300 | 900 | 2225 | 150 | 450 |
