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API 6A 2-9/16" 15000psi Drilling Adapter Spools or Spacer Spools or Riser Flange

API 6A 2-9/16" 15000psi Drilling Adapter Spools or Spacer Spools or Riser Flange
1.Spacer Spool, also referred to as Riser Spool, or Surface Riser Spool, is pressure-containing piece of equipment...

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