Argweld® Weld Backing Tape®

Overview

Tech Specs

FAQ

Improve Weld Root Profiles!

Argweld® Weld Backing Tape® by HFT® is designed to support weld roots and provide even weld root profiles. The backing tape comprises a 75 mm wide aluminium adhesive tape with a 25 mm wide fibreglass band in the centre, onto which the weld can be cast. This setup dramatically increases welding speeds, resulting in neat, clean welds that require minimal post-weld attention.

Applications for Argweld® Weld Backing Tape®

Metal Types

Carbon steels, stainless steels, duplex steels, chrome steels, copper-nickel, cast iron, nickel and cobalt alloys.

VersatilityIndustries

Large pipework, sheet and plate fabricators, shipbuilding, HVAC, agricultural machinery, food, dairy, breweries, pharmaceutical, petrochemical, and more.

Structures

Welding sheet, plate, pipes, vessels, tanks, silos, heat exchangers, cryogenic, pressure, and vacuum vessels.

Key Features and Benefits

Even Weld Root Profiles

Supports the weld pool and provides a consistent, high-quality underheard profile.

Increased Welding Speeds

Facilitates faster welding speeds and greater production rates.

Cost Savings

Reduces the need for expensive weld preparations, back gouging, and back grinding processes.

Gas and Time Efficiency

Eliminates the need to back purge entire vessels, significantly saving on purge gas and waiting time.

Technical Specifications

Material Composition:

Carrier Tape: 76 mm (3") wide high-temperature heat-resistant adhesive aluminium backing foil.
Fiberglass Band: 25 mm (1") wide woven glass fibre cloth, weight of 1000 grams per square meter.
Adhesive: Non-contaminating, a non-toxic adhesive that bonds the glass fibre backing strip firmly to the metal joint.

Low Current Grade (80 amps):

1.5 mm thick fiberglass band.
Suitable for welding up to 1.6 mm thick materials.
Supplied in rolls of 25 meters.

Medium Current Grade (160 amps):

2.5 mm thick fiberglass band.
Suitable for welding up to 6 mm thick materials.
Supplied in rolls of 12.5 meters.

High Current Grade (240 amps):

3 mm thick fiberglass band.
Suitable for welding up to 10 mm thick materials.
Supplied in rolls of 12.5 meters.

Super Heavy Amperage (600 amps):

Comprising 76 mm adhesive heat-resistant aluminium tape with 25 mm wide-thick weave glass fibre tape.
Suitable for welding up to 10 mm thick materials.
Supplied in rolls of 12.5 meters.

Your Questions Answered

Does the Argweld® Weld Backing Tape® support the weld?

Yes, it supports the weld pool for single-sided welding within the specified current constraints.

What effect will the adhesive have on the weld?

The adhesive will not contaminate the weld and is easily removed after the weld has cooled.

What amperage can the Argweld® Weld Backing Tape® withstand?

Light Duty: Up to 80 Amps.
Medium Duty: Up to 160 Amps.
Heavy Duty: Up to 240 Amps.
Super Heavy Duty: Up to 600 Amps.

Can Argweld® Weld Backing Tape® be reused?

No, the properties of the glass fibre degrade after one use, and the adhesive may not work twice.

What is the length of a roll?

Light Duty: 25 meters.
Medium, Heavy, Super Heavy Duty: 12.5 meters.

What applications is the tape designed for?

It is suitable for sheets, plates, pressure vessels, large-diameter pipes, tanks, and more. It supports the weld pool and sometimes eliminates the need for back purging or double-sided welding.

What metals can be welded with the tape?

It is suitable for all weldable metals, including stainless, duplex, alloy steels, nickel and cobalt alloys, and titanium.

What welding processes can be used with the tape?

Suitable for TIG/GTAW, FCAW, and MIG/GMAW processes within the specified current limits.

What advantages does it have over backing bars and purging dams?

Eliminates the need for expensive backing bars and complicated fixturing, providing a practical and cost-effective solution.

Are there any fumes given off?

No, the tape does not emit noxious or toxic fumes.

What is the difference between Argweld® Weld Backing Tape® and backing tiles?

Backing tape is more economical for welding currents up to 600 amps. For higher currents, ceramic backing tiles are recommended.

What is the difference between ceramic tape and Argweld® Backing Tape®?

Argweld® Backing Tape® withstands high temperatures better than ceramic tape, which can crumble and allow air into the weld zone.

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Argweld® Weld Backing Tape®

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CLIENT TESTIMONIALS

"The purge meters are second to none."

"I am a huge fan of Huntingdon products and have talked to others over the years about using them. The purge meters are second to none. I own and use regularly my PurgEye 100 and my PurgEye 300. I think somewhere, I still have my original Argweld® MKV monitor, which sadly no longer powers up. I am a scarce breed because I have 3 degrees and a complete academic understanding of metallurgy, but more importantly, welding science; I also have over 20 years of hands-on experience in welding on drill floors, firing lines, and vessel shops. I quite literally have a passion for old-fashioned welding! Excellent product, guys!"

Davina Urquhart
CITY COLLEGE AND SENIOR WELDING ENGINEER AT TRANSWELD SERVICES LTD

"One of the best, if not the best, residual oxygen detector instruments on the market."

"I believe the PurgEye to be one of the best if not the best, residual oxygen detector instruments on the market with its digital residual oxygen level LED display readouts measuring as low as 0.01% and its large, user-friendly viewing screen making it easier for me to read. I also believe the PurgEye has great accuracy in residual oxygen, with speedy measurements displayed within seconds. The PurgEye is a far cry from the old school homemade 'use a cigarette lighter' to check purge gas flow system."

Construction and Maintenance
PIPING SOLUTIONS PTY LTD, AUSTRALIA

"Purge monitors are a necessity."

"I can personally vouch for purge monitors. When working with medium to large-diameter exotic pipework, they can prevent you from having a terrible day! I've only used the older model, which was a godsend. Anyone, from the welder who has had to carry out weld repairs due to root weld oxidation (or coking) on such materials, to the directors facing an expensive bill for re-work and possible tarnished company reputation, to the client with their project now running behind schedule - knows exactly what I mean. Purge monitors are a necessity."

Colin Sherriffs
WELDING AND FABRICATION INSTRUCTOR/ASSESSOR AT ITCA LTD

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