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Weld Test Service

The CARBER Weld Test Service utilizes patented technology for a safer, quicker and cheaper way to hydrotest new welds on piping systems.

  • Available immediately from ½” to 120”

  • Lightweight system negates the need for lifting equipment

  • 8” and larger can be performed simultaneously with CARBER Isolation

  • Eliminates installation of hydro blinds

  • No post-hydro dry out phase

  • A 120” weld only requires ½ gallon of water to test

Weld Test Service
Weld Test Service_Img2

The CARBER Weld Test service utilizes a patented tool designed and manufactured by CARBER.  Their innovative tool revolutionizes the way weld hydrotests are performed. Traditionally after a repair, alteration, modification, revamp or tie-in an entire system would be filled with medium and brought to pressure to test a single weld.  This process can be very costly in both the amount of medium needed and the amount of time necessary to complete the test.  The Weld Test tool does away with this traditional approach and uses a fraction of the medium and significantly reduces the amount of time needed to test a single weld.  A 102” weld can be tested with less than one-half gallon of water.  This decrease in time and medium result in a decreased cost and less downtime; thus allowing facilities to focus on production, not maintenance.

CARBER Weld Test service is fully capable of meeting ASME B31.1/B31.3 standards as well as ASME BPV V & VIII, API 510 & 570.  ISOTECH has tools in all common pipe sizes and schedules, less common sizes can be custom manufactured.  The CARBER Weld Test tool fits inside the pipe and creates two seals on either side of the weld. After these two seals are established, medium is brought to the specified test pressure in the annulus between the seals.  This pressure is then held for the necessary length of time required to hydrotest the new weld.  Because the service requires only miniscule amounts of medium to perform the hydrotest, the medium that is best suited for your system can be utilized (glycol, mineral oil, peanut oil, etc.).  Because most application involve inside walls of the pipe which are less than perfect, ISOTECH technicians have a host of troubleshooting practices and the CARBER Weld Test Tool has engineered features that enable it to accommodate such challenges.  ISOTECH can even hydrotest a weld that is out of round. Common pipe sizes are ready for service.

Another advantage of the CARBER Weld Test Tool is the ability to test a flange that has been welded into place. The Weld Test service tests the integrity of the weld, the heat affected zone of the weld, and the actual flange simultaneously.  The integrity of a new flange is important.  Should a faulty flange be found at a later date, the repair/replacement can be more costly and time consuming than initially testing the flange with the weld.  Leaky flanges are dangerous and are known to cause fires and/or explosions. ISOTECH is here to help you do it once and do it right.

The CARBER Weld Test Service is applicable in the following scenarios:


  • Weld Neck Flanges

  • Socket-weld Flanges

  • Slip-on Flanges

  • Orifice Flanges

  • Orifice Flange Root Valves

  • Branch Connections

  • Wall Thickness Transitions

  • Flange to Elbows

  • Flange to Reducers

  • Flange to Tees

  • Butt Welds

  • Gasket Faces

ISOTECH provides certified and experienced technicians with a safety mindset.  Our technicians coupled with the Weld Test Tool provide a world-class service with an unmatched safety record to provide you peace of mind and the ability to focus on other aspects of your project or production.  Call ISOTECH office today to learn how our technicians can help lower the cost and shorten the duration of your project!

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