Titanium flange pressure grade Class and nominal pressure comparison table
| ASME | 150 | 300 | 400 | 600 | 800 | 900 | 1500 | 2500 |
| class | ||||||||
| Nominal pressure MPa |
0.6 MPa | 2.5 MPa | ||||||
| 1.0 MPa | 4.0 MPa | 6.4 MPa(6.3MPa) | 10.0MPa | (13.0MPa) | 15.0 MPa | 25.0MPa | 42.0MPa | |
| 1.6 MPa | 5.0 MPa | |||||||
| 2.0 MPa | ||||||||
| Nominal pressure PN |
PN6 | PN25 | ||||||
| PN10 | PN40 | PN6.4 | PN100 | PN150 | PN250 | PN420 | ||
| PN16 | PN50 |
This table is only for comparing the sizes of each other. There are clear instructions in the American standard. 1501b, 3001b, 4001b, 6001b, 9001b, 15001b, and 25001b correspond to PN20, PN50, PN68, PN110, PN150, PN260, and PN420 respectively.
Commonly used titanium flange types include the following, which are usually used in the chemical industry, marine engineering, aerospace, and other fields.
WNF--Butt welding flange/high neck flange (Weld Neck Flange)
SO--Slip On Flange with neck
PL--Plate Flange
SW--Socket Weld Flange
TF-Threaded Flange
