ARGWELD® Product Presentation Weld Backing Tape

Main features and advantages 2 ¡ Weld root protection ¡ Weld metal deposited directly onto backing tape (no surplus metal/slag) ¡ Major savings on purge gas & time ¡ For use on stainless and alloy steels as well as all other reactive metals ¡ Helps to eliminate weld defects ¡ Suitable for sheets, plate, pipes & vessels ¡ For both horizontal & vertical welding ¡ No gouging or grinding required ¡ No need for re-welding or re-work ARGWELD® Weld Backing Tape

Industries and processes 3 ¡ Manual Metal Arc (MMA) welding ¡ Shipbuilding ¡ Mig (Gmaw) welding ¡ TIG (GTAW) welding ¡ Nuclear ¡ Petrochemical ¡ Roofing ¡ Brewery, winery, dairy ¡ Power ARGWELD® Weld Backing Tape ¡ Submerged Arc (Smaw) welding

Applications 4 ¡ Steam Generators ¡ Large diameter pipes ¡ Pressure Vessels ¡ Brewery, winery, dairy tanks ¡ Suitable for sheets, plate, pipes & vessels ¡ Vacuum Tanks and chambers ¡ Milk Tankers, Chemical Tankers ARGWELD® Weld Backing Tape ¡ Railway Tankers ¡ Silos ¡Nuclear Containment vessels ¡ For both horizontal & vertical welding ¡ Lng storage tanks ¡ Heat exchangers ¡ Mechanical Roofs

From 80 Amps… …up to 240 Amps New in 2010 NOW AVAILABLE: 3 Different grades of Weld Backing Tape ARGWELD® Weld Backing Tape 5

80 Ampere welding current - Grade 6 80 amp ARGWELD® Weld Backing Tape. ¡ Suitable for welding with welding currents up to 80 Amperes ¡ Roll length 25 M ¡ for welding stainless thicknesses up to 1.6 mm ARGWELD® Weld Backing Tape ¡ Welding electrode size 1 mm (0.040”) ¡ Welding speed up to 600 mm per min New version with red line for centering on weld

160 Ampere welding current - Grade 7 160 a Argweld® Weld Backing Tape ¡ Welding Electrode size 1.5 or 2.4 mm (1/16” or 3/32”) ¡ For welding currents up to 160 Amps ¡ Welding Speed up to 500 mm per minute ¡ Roll length 12.5 M ¡ For stainless thicknesses up to 6 mm ARGWELD® Weld Backing Tape

240 Ampere welding current - Grade 8 240 Amp Argweld® Weld Backing Tape ¡ Welding Electrode size 2.4 or 3.2 mm(3/32” or 1/8”) ¡ For welding currents up to 240 Amps ¡ Welding Speed up to 450 mm per minute ¡ Roll length 12.5 M ¡ For Stainless thicknesses up to 10 mm ARGWELD® Weld Backing Tape

Example ARGWELD® Weld Backing Tape 9 ¡ 36'’ (900 mm) diameter stainless steel tank, vessel or pipe ¡ Material thickness: Approx 1/8th inch/ 0.0125 inch (3 mm) ¡ Tungsten Electrode: 3/32nd inch (2.4 mm) diameter ¡ Filler wire: 1/16th inch (1.6 mm) diameter ¡ Weld speed: Approx 3 – 4 inches per minute (75 – 100 mm/min) ¡ Weld current: 90 – 120 Amps ¡ Cost of 1 roll of Backing Tape: £42 (will make 4 x 36'' Ø welds*) *Backing Tape suitable for welding up to 160 Amps with TIG A typical costing for the use of Weld Backing Tape*

ARGWELD® Weld Backing Tape 10 Example A typical costing for the use of Weld Backing Tape* Feature 36'' Ø Pipe/Tank No back purge possible or used 36'' Ø Pipe/Tank Welded with BACKING TAPE Grinding time 1 hr (est.) £25.00 £0.00 Pickling costs (est.) £10.00 £0.00 (subject to use) Pickling disposal (est.) £10.00 £0.00 subject to use) Grinding consumables (est.) £10.00 £0.00 Admin. costs for purchases, payments, receipts, storage (est.) £100.00 £10.00 (Backing tape only) Re-welding time (est.) £10.00 £0.00 Cost of BACKING TAPE n/a £10.00 TOTAL COSTS £165.00 £20.00

ARGWELD® Weld Backing Tape 11 Application Applica…tioann odn e tahsey irnesmidoev oafl a pipe

Wweld ARGWELD® Weld Backing Tape 12 Results Weld Root being welded

ARGWELD® Weld Backing Tape 13 Results 240 Amp tape after welding

ARGWELD® Weld Backing Tape 14 Application Correct application of Backing Tape

eor ARGWELD® Weld Backing Tape 14 Application Correct application of Backing Tape Either by hand Or using a roller

ARGWELD® Weld Backing Tape 15 Typical weld without Backing Tape Results Typical weld with Backing Tape

ARGWELD® Weld Backing Tape 16 Alternative methods of back purging ¡ Suitable for weld currents above 240 Amps ¡ Comparatively expensive Ceramic tile backing

ARGWELD® Weld Backing Tape Alternative methods of back purging Permanent backing ¡ Limited application ¡ Expensive and time consuming 17

ARGWELD® Weld Backing Tape Alternative methods of back purging 18 Consumable Inert ¡ Expensive to purchase ¡ Time consuming to tack weld into place

ARGWELD® Weld Backing Tape Gas purge backing ¡ Expensive to manufacture ¡ Expensive to apply ¡ Good weld purging using gas pressure to control root penetration Alternative methods of back purging 19

ARGWELD® Weld Backing Tape Gas purge backing ¡ Argweld trailing shields can be used as gas backing bars ¡ Inexpensive ¡ Good weld purging using gas pressure to control root penetration ¡ Alternative to backing tape where practical, necessary or preferred Alternative methods of back purging 20

ARGWELD® Weld Backing Tape Alternative methods of back purging ARGWELD® Tape backing ¡ Low cost ¡ Simple to apply ¡ Good results with minimum post weld attention 21

ARGWELD® All photos courtesy of Huntingdon Fusion Techniques Limited, UK. Thank you 2010