| Type | Material | Sizes |
|---|---|---|
| Blind | ASTM A350 LF2 |
|
| Pressure Rating | Classes | Impact Test Temperature |
| Class 150 to Class 2500 | Class 1 and Class 2 | -20 ℉ |
| Test Certificates | ASME/ANSI | Face Types |
|
|
|
ASTM A350 Gr LF2 blind Flange
ASTM A350 LF2 Class 1 blind Flange
SA350 Gr LF2 Cl1 blind flange
ASTM A350 LF2 blind flanges
A350 LF2 blind flange
SA 350 LF2 blind Flange
NPS |
Outside Diameter |
Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | Raised Face Thickness (T) |
Flat Face Thickness (T2) |
Bolt Hole (B) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|
| 1/2″ | 3.50″ | 2.38″ | 1.38″ | .063″ | .44″ | .38″ | .62″ | 4 |
| 3/4″ | 3.88″ | 2.75″ | 1.69″ | .063″ | .50″ | .44″ | .62″ | 4 |
| 1″ | 4.25″ | 3.12″ | 2.00″ | .063″ | .56″ | .50″ | .62″ | 4 |
| 1-1/4″ | 4.62″ | 3.50″ | 2.50″ | .063″ | .62″ | .56″ | .62″ | 4 |
| 1-1/2″ | 5.00″ | 3.88″ | 2.88″ | .063″ | .68″ | .62″ | .62″ | 4 |
| 2″ | 6.00″ | 4.75″ | 3.62″ | .063″ | .75″ | .69″ | .75″ | 4 |
| 2-1/2″ | 7.00″ | 5.50″ | 4.12″ | .063″ | .88″ | .82″ | .75″ | 4 |
| 3″ | 7.50″ | 6.00″ | 5.00″ | .063″ | .94″ | .88″ | .75″ | 4 |
| 3-1/2″ | 8.50″ | 7.00″ | 5.50″ | .063″ | .94″ | .88″ | .75″ | 8 |
| 4″ | 9.00″ | 7.50″ | 6.19″ | .063″ | .94″ | .88″ | .75″ | 8 |
| 5″ | 10.00″ | 8.50″ | 7.31″ | .063″ | .94″ | .88″ | .88″ | 8 |
| 6″ | 11.00″ | 9.50″ | 8.50″ | .063″ | 1.00″ | .94″ | .88″ | 8 |
| 8″ | 13.50″ | 11.75″ | 10.62″ | .063″ | 1.12″ | 1.06″ | .88″ | 8 |
| 10″ | 16.00″ | 14.25″ | 12.75″ | .063″ | 1.19″ | 1.13″ | 1.00″ | 12 |
| 12″ | 19.00″ | 17.00″ | 15.00″ | .063″ | 1.25″ | 1.19″ | 1.00″ | 12 |
| 14″ | 21.00″ | 18.75″ | 16.25″ | .063″ | 1.38″ | 1.32″ | 1.12″ | 12 |
| 16″ | 23.50″ | 21.25″ | 18.50″ | .063″ | 1.44″ | 1.38″ | 1.12″ | 16 |
| 18″ | 25.00″ | 22.75″ | 21.00″ | .063″ | 1.56″ | 1.50″ | 1.25″ | 16 |
| 20″ | 27.50″ | 25.00″ | 23.00″ | .063″ | 1.69″ | 1.63″ | 1.25″ | 20 |
| 22″ | 29.50″ | 27.25″ | 25.25″ | .063″ | 1.81″ | 1.75″ | 1.38″ | 20 |
| 24″ | 32.00″ | 29.50″ | 27.25″ | .063″ | 1.88″ | 1.82″ | 1.38″ | 20 |
| Element | Composition, w.t % |
| LF2 | Grades |
| C | ≤0.30 |
| Mn | 0.60-1.35 |
| P | ≤0.035 |
| S | ≤0.040 |
| Si | 0.15-0.30 |
| Ni | ≤0.40 |
| Cr | ≤0.30 |
| Mo | ≤0.12 |
| Cu | ≤0.40 |
| Cb | ≤0.02 |
| V | ≤0.08 |
| N | ... |
| Grade/Class | Tensile Strength | Yield Strength, min. | Elongation, min. | Hardness, max. | ||
| ksi | MPa | ksi | MPa | % | HBW | |
| LF2 CL2 | 70–95 | 485–655 | 36 | 250 | 22 | 197 |
| NPS | BLRF |
|---|---|
| ½ | 2 |
| ¾ | 2 |
| 1 | 2 |
| 1¼ | 3 |
| 1½ | 4 |
| 2 | 5 |
| 2½ | 7 |
| 3 | 9 |
| 3½ | 13 |
| 4 | 17 |
| 5 | 20 |
| 6 | 27 |
| 8 | 47 |
| 10 | 70 |
| 12 | 123 |
| 14 | 140 |
| 16 | 180 |
| 18 | 220 |
| 20 | 285 |
| 22 | 355 |
| 24 | 430 |
| NOM PIPE SIZE | DIAMETER OF BOLTS | DIAMETER OF BOLT CIRCLE | LENGTH OF STUDS 1/16" RAISED FACE | # OF BOLTS | BOLT LENGTH |
|---|---|---|---|---|---|
| 0.5 | 0.5 | 2.375 | 2.25 | 4 | 1.75 |
| 0.75 | 0.5 | 2.75 | 2.25 | 4 | 2 |
| 1 | 0.5 | 3.125 | 2.5 | 4 | 2 |
| 1.25 | 0.5 | 3.5 | 2.5 | 4 | 2.25 |
| 1.5 | 0.5 | 3.875 | 2.75 | 4 | 2.25 |
| 2 | 0.625 | 4.75 | 3 | 4 | 2.75 |
| 2.5 | 0.625 | 5.5 | 3.25 | 4 | 3 |
| 3 | 0.625 | 6 | 3.5 | 4 | 3 |
| 3.5 | 0.625 | 7 | 3.5 | 8 | 3 |
| 4 | 0.625 | 7.5 | 3.5 | 8 | 3 |
| 5 | 0.75 | 8.5 | 3.75 | 8 | 3.25 |
| 6 | 0.75 | 9.5 | 3.75 | 8 | 3.25 |
| 8 | 0.75 | 11.75 | 4 | 8 | 3.5 |
| 10 | 0.875 | 14.25 | 4.5 | 12 | 3.75 |
| 12 | 0.875 | 17 | 4.5 | 12 | 4 |
| 14 | 1 | 18.75 | 5 | 12 | 4.25 |
| 16 | 1 | 21.25 | 5.25 | 16 | 4.5 |
| 18 | 1.125 | 22.75 | 5.75 | 16 | 4.75 |
| 20 | 1.125 | 25 | 6 | 20 | 5.25 |
| 22 | 1.25 | 27.25 | 6.5 | 20 | 5.5 |
| 24 | 1.25 | 29.5 | 6.75 | 20 | 5.75 |
| 26 | 1.25 | 31.75 | 7 | 24 | 6 |
| 30 | 1.25 | 36 | 7.25 | 28 | 6.25 |
| 34 | 1.5 | 40.5 | 8 | 32 | 7 |
| 36 | 1.5 | 42.75 | 8.25 | 32 | 7 |
| 42 | 1.5 | 49.5 | 8.75 | 36 | 7.5 |
| Spec | Class | Available Size Range |
| B16.5 | 150 | 0.5” – 24” |
| B16.5 | 300 | 0.5” – 24” |
| B16.47 | 150 | 26” – 60” |
| B16.47 | 300 | 26” – 60” |
| HSN code | 73072100 |