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Effective Heavy-Duty Pipe Stopping

aluminium Plugs, drain plug, leak testing, pipe plugging, pipe stopping

HFT® Pipestoppers® Aluminium Plugs have been designed for use in applications where pipes carrying fluids need to be plugged or sealed. They are available up to 36’’ (900mm) and can accommodate temperatures up to 250⁰C.

These heavy-duty plugs are manufactured with a low-friction washer to ease tightening of the ring nut that expands a rubber ring and make a completely leak-tight seal. In addition, because the plugs are neutrally buoyant they can also be used in sub-sea environments.

Standard plugs are fitted with a natural rubber seal, but alternatively silicone, nitrile, neoprene or Viton can be supplied if required.

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Oxygen Monitor for Welding

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Inert gas welding requires the elimination of oxygen from the weld zone during the welding of reactive metals including stainless steel.

Before the welding process begins, the oxygen level must be reduced to a required minimum, which is less than 100 ppm when welding stainless steel.

The low cost, hand held, battery operated PurgEye® 100, designed and developed by Huntingdon Fusion Techniques HFT® is perfect for obtaining zero colour, oxide free welds in stainless steel, reading accurately from atmospheric oxygen level (20.94%), right down to 100 ppm (0.01%).

The PurgEye® 100 is IP65 rated and comes with long life sensor, leak-tight push buttons, auto calibration and a vacuum-sealed leak-tight probe assembly. The monitor has a clear, easy to read LCD screen with features such as a low battery icon as well as the low sensor icon. When the monitor is not in use, an automatic sleep mode activates to conserve battery life.

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Low Cost Weld Purge Plugs for Tube and Pipe Weld Purging

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Due to tight budgets, welders sometimes have to construct their own Weld Purging Equipment, often made from materials such as paper, card, sponge or foam. Homemade dams made from such materials can often lead to loss of welds when they leak or slip from position thus flooding the welding zone with oxygen.

The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® manufacture a range of low cost, lightweight Weld Purge Plugs for a variety of applications where the pipe sizes are 0.5 to 6” (12 to 150 mm) diameter.

Ron Sewell, Chairman for HFT® said: “Our Weld Purge Plugs are a great barrier for purging pipes when welding alloys and stainless steel. Manufactured with a hollow shaft, these plugs can be used for weld purging smaller diameter pipes and miscellaneous stubs.”

 

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Inflatable Pipe Weld Purging Systems Drastically Restrict Weld Purge Volumes

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Inflatable Pipe Weld Purging Systems are in use worldwide, restricting weld purge volumes, making huge savings in time and inert gas.

Huntingdon Fusion Techniques HFT® design and manufacture PurgElite®, a range of low cost Tube and Pipe Purging Systems to achieve a clean, oxide free, zero colour weld in just minutes, available from 1” (25 mm).

Ron Sewell, Chairman for HFT® said: “Without restricting the purge zone with an inflatable pipe purging system when welding stainless steel, titanium or zirconium tube and pipes, displacing the oxygen in entire pipelines with an inert gas (usually argon), can cause a lot of wasted time and gas. PurgElite® reduces argon use and increases weld production.”

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Increase the life of your Tungsten Electrode with MultiStrike®

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Thoriated tungsten electrodes are still widely used in GTAW/TIG welding despite the potential health hazards. Thoria is added primarily to stabilize the arc but it is radio-toxic and radio-toxic dust is generated during electrode grinding.

To overcome the risk posed by harmful products Huntingdon Fusion Techniques HFT®’s blue-tipped MultiStrike® Tungsten Electrodes contain a mix of rare earth stabilizing compounds without thoria and are thus radio-toxic free. They also offer a life extension of up to ten times that of other stabilized electrodes.

Each packet comes with a traceability number to ensure that companies with a quality control procedure have traceability over another aspect of their joining processes.

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Hydrocarbon Resistant PetroChem® Stoppers

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Pipe blocking and stopping pipes containing hydrocarbons such as petroleum products and natural gas can often pose challenges, with normal Pipestoppers unable to withstand such intense conditions.

The Pipestoppers® Division of Huntingdon Fusion Techniques HFT® manufacture a range of hydrocarbon resistant stoppers called PetroChem® Stoppers. Manufactured from a high-grade latex, the PetroChem® Stoppers offer a rubber internal inflatable bag covered with a petrochemical resistant layer, which has a tough, woven impregnated nylon outer cover, capable of withstanding temperatures up to 80ºC (176ºF).

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Welding Enclosures for Wire Arc Additive Manufacturing

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TWI (The Welding Institute) states that: “Wire arc additive manufacturing uses arc welding power sources and manipulators to build 3D shapes through arc deposition. This process commonly uses wire as a material source and follows a predetermined path to create the desired shape. This method of additive manufacture is usually performed using robotic welding equipment.”

The use of Flexible Welding Enclosures® during the Wire Arc Additive Manufacturing process has helped to keep an inert gas shield around the titanium and other reactive alloy components with special protective enclosures designed and manufactured by Weld Purging Experts Huntingdon Fusion Techniques HFT®.

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Weld Purge Monitor for On-Site Conditions

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Welding on site can pose difficult challenges, including exposure to extremes of heat and cold, harmful sand and dust and even hazardous fumes. Contamination during welding can lead to loss of corrosion resistance and a reduction in strength so control of oxygen levels is crucial.

With another innovative development, Huntingdon Fusion Techniques HFT® have designed a virtually non-destructible Weld Purge Monitor® to work accurately within extreme environments. The PurgEye® Site is a guarded oxygen monitor in a secure, safe, waterproof and dustproof, tough carry case.

Technical Sales Manager Luke Keane said: “The PurgEye® Site is our on-site monitor, that has been specifically designed for extreme conditions. By using the PurgEye® Site, welders can ensure non-oxidised, zero colour welds are achieved regardless of conditions.”

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Low Cost Pipe Stopping for Tight Access

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Pipe blocking, plugging and sealing for duties such as repair work, leak testing, weld purging and debris stopping is easy with Pipestoppers®.

The Pipestoppers® Division at Huntingdon Fusion Techniques HFT® design and manufacture a Range of Mechanical and Inflatable Pipestoppers® and Plugs to suit a variety of applications.

The Low Profile Stopper is available for applications where insufficient length of pipe is available for the regular Cylindrical or Spherical Inflatable Stopper.

Ron Sewell, Chairman at HFT® said: “The Low Profile Stopper can fit into a pipe end that may be directly on an elbow or just inside a flanged neck on a casting. Other applications include blocking pipe ends to keep gases inside or to keep debris and vermin out.”

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QuickPurge® Your Large Diameter Pipes for Perfect Welds

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Purging large diameter pipework ready for welding can be expensive. Without restricting the volume, there is a high cost involved in inert gas used and time spent waiting for the oxygen level to reach a level low enough for welding to begin.

Weld Purging experts Huntingdon Fusion Techniques HFT® have designed and developed QuickPurge® Systems to dramatically reduce the space that needs to be purged, for pipes as large as 88” (2,235 mm).

HFT® was recently tasked with a special project in the USA, where pipes with 90o elbows, up to 54” (1,371 mm) ø were required to be purged.

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Secondary Inert Shielding Gas Application with Weld Trailing Shields

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A secondary inert shielding gas application is often required when welding reactive metals such as titanium alloys and stainless steels, to protect the weld from oxidation until it has cooled to a safe temperature.

The low cost Argweld® Weld Trailing Shield® provides additional inert gas coverage during welding and is available from Huntingdon Fusion Techniques HFT® in flat and radiused versions.

Ron Sewell, Chairman for HFT® said: “Our Trailing Shields® simply attach onto any TIG/GTAW, PAW/Plasma and MIG/GMAW welding torch, ensuring that the weld stays under a protective inert gas coverage while the hot weld metal is cooling, preventing it from oxidising on contact with air.”

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Safe Pipe Repair with Accu-Freeze™

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Pipe freezing for temporary pipe isolation has now become the safest, quickest and most cost-effective method for pipeline leak testing, maintenance work or for making pipe repairs including valve and other control system replacements.

It is still very common for maintenance workers to drain down entire systems before repairs can be made but this can lead to time lost spent draining and disposing of the product.

To dramatically reduce costs whilst maintaining the highest level of safety, Accu-Freeze™ pipe freezing systems are available from the Pipestoppers® Division of Huntingdon Fusion Techniques HFT®.

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