| NOMINAL PIPE SIZE | PRESSURE CLASSES | |||||||
| API 6BX | ||||||||
| 2000# | 3000# | 5000# | 10000# | 15000# | 20000# | |||
| 1 11/16" | - | - | - | BX-150 | BX-150 | - | ||
| 1 13/16" | - | - | - | BX-151 | BX-151 | BX-151 | ||
| 2 1/16" | - | - | - | BX-152 | BX-152 | BX-152 | ||
| 2 9/16" | - | - | - | BX-153 | BX-153 | BX-153 | ||
| 3 1/16" | - | - | - | BX-154 | BX-154 | BX-154 | ||
| 4 1/16" | - | - | - | BX-155 | BX-155 | BX-155 | ||
| 5 1/8" | - | - | - | BX-169 | - | - | ||
| 6 5/8" | - | - | - | BX-170 | BX-170 | - | ||
| 7 1/16" | - | - | - | BX-156 | BX-156 | BX-156 | ||
| 8 9/16" | - | - | - | BX-171 | BX-171 | - | ||
| 9" | - | - | - | BX-157 | BX-157 | BX-157 | ||
| 11" | - | - | - | BX-158 | BX-158 | BX-158 | ||
| 11 5/32" | - | - | - | BX-172 | BX-172 | - | ||
| 13 5/8" | - | - | BX-160 | BX-159 | BX-159 | BX-159 | ||
| 16 3/4" | - | - | BX-161 BX-162 | BX-162 | BX-162 | - | ||
| 18 3/4" | - | - | BX-163 | BX-164 | BX-164 | - | ||
| 21 1/4" | - | - | BX-165 | BX-166 | - | - | ||
| 26 3/4" | BX-167 | BX-168 | - | - | - | - | ||
| 30" | BX-303 | BX-303 | - | - | - | - | ||