Our inventory of HMH (Hydril) Variable Bore Rams ranges 7-1/16 inches to 18-3/4 inches, with working pressures of 5M, 10M and 15M. We carry HMH (Hydril) type variable bore rams.
Click here to download our variable bore ram specification chart.
Please refer to the graph below for variable bore ram specifications:
| Bore Size | 7-1/16" | 7-1/16" | 7-1/16" | 11" | 11" | 11" | 13-5/8" | 13-5/8" | 13-5/8" | 18-3/4" | 18-3/4" | 18-3/4" |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Working Pressure (psi) | 5M | 10M | 15M | 5M | 10M | 15M | 5M | 10M | 15M | 5M | 10M | 15M |
| Type | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril | Hydril |
| VBR Range | * | * | * | * | * | * | 3-1/2" To 6" | 2-7/8" To 5" | * | * | 2-7/8" To 5-1/2" | 3-1/2" To 5-1/2" |
| VBR Range | * | * | * | * | * | * | 4-1/2" To 7" | 3-1/2" To 5" | * | * | 3-1/2" To 5" | 3-1/2" To 5-7/8" |
| VBR Range | * | * | * | * | * | * | * | * | * | * | 4-1/2" To 7" | 4-1/2" To 7" |
| VBR Range | * | * | * | * | * | * | * | * | * | * | * | 5-1/2" To 7-5/8" |