GripTight Elbow Test Plugs

Versatile Design for Testing Elbow Configurations to 3350 PsiG (231 BarG) and sizes 2″ to 24″.

Plugs for larger pipe sizes and higher pressures available on request.



EST Group’s GripTight® Elbow Test Plug is a revolutionary new plug designed for testing long radius elbows. Patent-pending dual-serrated GripTight MAX™ grippers give this unique plug design enhanced holding power to 3350 PsiG (231 BarG) – providing a safe and effective solution for pipe spools and piping systems terminating in long radius elbows.


  • Orientation Free Installation – no need to align with elbow
  • Test Pressure – 3350 PsiG (231 BarG) – higher pressures available upon request
  • Stocked sizes for NPS ranging from 2” thru 24” (DN50 – DN600), larger sizes built to order
  • Patent-pending dual-serrated gripper design
  • Fits all long radius elbows (45°, 90°, 180°)
  • Easy Installation – No welding or hot work required
  • Safe self gripping design uses test pressure to increase holding power
  • Save up to 80% in testing time vs. welded-on end cap procedures
  • Laser-marked top washer clearly identifies part number, size range, pressure rating, and document number for operating instructions


  • Carbon Steel, Stainless Steel, Duplex, Super Duplex, Inconel, Incoloy, Hastelloy, ChroMoly, Clad Elbows, Hardened Materials
  • Reliable performance in a wide range of finishes – cast, rolled, extruded, machined, polished, honed, etc.

GripTight Max High Pressure Test Plug for open ended pipes

High Lift Flange Weld Test Plugs for Flange to Pipe Joints Double Block and Bleed Test / Isolation Plugs EST Group Elbow Test Plug GTLBO plugs are for use in all Carbon Steel, Stainless Steel and Alloy pipes with a hardness up to HRC 32. Contact us if Hardness is greater than HRC 32 or if the test pressure exceeds the maximum plug rating or is in excess of 80% of specified minimum yield stress for host pipe tube, or equipment.