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U Type BOP Variable Bore Ram & Rubber - Camtop
VARIABLE BORE RAM SIZE 7-5/8" TO 3-1/2" FOR 18-3/4" 15K T/TL BOP - Triconser
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Variable Bore Rams (VBR) – Most of the rigs prefer to use the VBR instead of the fixed pipe rams because its flexibility to work with various pipe size... | By Drillingformulas.Com
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