How It Works: What is a Backing Strip for a Welded Joint?

Re: why 03~05 mm area in single V weld joint not inspected?

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Use of Type (3) welds in ASME Pressure Vessel Design - Pressure

Using a Copper Backing Strip When Filling Holes by Welding

Gullco Katbak Ceramic Weld Backing Tape – Canada Welding Supply Inc.

UT indications in a T-joint with backing bar

Backing in welding – AMARINE

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Mechanical Weld Backing Methods - TP 1063

Mechanical Weld Backing Methods - TP 1063

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Fiberglass tape that has your [weld's] back

Design - Part 4 - TWI

Butt Joints with Backing Strips