API 6A Type 6B & 6BX Flanges
Flanges are available as Weld Neck, Integral, Blinds, Targets and Test Blinds for use with the following pressure ratings:
| Max. Working Pressure |
2,000 PSI |
3,000 PSI |
5,000 PSI |
10,000 PSI |
15,000 PSI |
20,000 PSI |
| Test Pressure |
3,000 PSI |
4,500 PSI |
7,500 PSI |
15,000 PSI |
22,500 PSI |
30,000 PSI |
| Product Specification Levels |
1, 2, 3 & 4 |
1, 2, 3 & 4 |
1, 2, 3 & 4 |
1, 2, 3 & 4 |
1, 2, 3 & 4 |
1, 2, 3 & 4 |
| API Temperature Rating |
K (-60 Deg C) |
K (-60 Deg C) |
K (-60 Deg C) |
K (-60 Deg C) |
K (-60 Deg C) |
K (-60 Deg C) |
| To |
To |
To |
To |
To |
To |
| Y (+345 Deg C) |
Y (+345 Deg C) |
Y (+345 Deg C) |
Y (+345 Deg C) |
Y (+345 Deg C) |
Y (+345 Deg C) |
Integral, Blind, Target Blind & Test Flanges |
| Min. Yield |
60,000 PSI |
60,000 PSI |
60,000 PSI |
60,000 PSI |
75,000 PSI |
75,000 PSI |
| Min. Tensile |
85,000 PSI |
85,000 PSI |
85,000 PSI |
85,000 PSI |
95,000 PSI |
95,000 PSI |
| Material |
API 60K |
API 60K |
API 60K |
API 60K |
API 75K |
API 75K |
Weld Neck Flanges |
| Min. Yield |
45,000 PSI |
45,000 PSI |
45,000 PSI |
60,000 PSI |
75,000 PSI |
75,000 PSI |
| Min. Tensile |
70,000 PSI |
70,000 PSI |
70,000 PSI |
85,000 PSI |
95,000 PSI |
95,000 PSI |
| Material |
API 45K |
API 45K |
API 45K |
API 60K |
API 75K |
API 75K |
Our spec-sheet includes all the relevant information regarding our products. You can download it below. Feel free to contact us if anything isn't clear or for any more information.

If you would like to download the brochure for our entire range of products, please click this link.
info@at-engineering.co.uk