Fiberglass Weld Backing Tape is a 75 mm wide, metallic heat resistant adhesive tape, which has a 25 mm wide cloth strip of fiber glass, held up against weld preparation area and maintains weld in same plane as plates or tubes being joined. We make Fiberglass Weld Backing Tape available in light duty use up to 80 amps and heavy duty for use up to 160 amps. Fiberglass Weld Backing Tape is considered useful and efficient as it is more flexible, has low thermal conductivity, good thermal shock resistance, good mechanical and chemical agents-resistance as well as good electrical properties.