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The XTRWELD 40CT is a replacement conductor tube designed for Tweco-style 400-amp air-cooled MIG welding guns. The conductor tube is the current-carrying component that routes welding wire from the drive system through the gun neck to the contact tip. It is a wear and replacement item serviced by welding technicians and fabrication shop maintenance personnel. The 40CT accepts wire diameters from 0.023 inches up to 3/32 inches, making it compatible with a broad range of solid, flux-cored, and metal-cored wire applications at the 400-amp duty level.
This conductor tube is suited for heavy industrial and fabrication environments where 400-amp air-cooled MIG guns see extended use. Typical applications include structural steel fabrication, heavy equipment manufacturing, and production welding operations. The Tweco-style design makes it a direct-replacement component in shops already running compatible 400-amp gun assemblies. It is sold individually and is intended for field replacement when the existing tube shows wear, arc damage, or reduced wire-feed smoothness.
Designed as a Tweco-style replacement conductor tube for 400-amp air-cooled MIG gun assemblies with a wire feed range of 0.023 inches to 3/32 inches.
Conductor tube replacement is performed by welding equipment technicians or experienced welding personnel. Always disconnect the MIG gun from the welding power source and wire feeder before disassembling the gun neck or replacing consumable components. Use appropriately sized hand tools to remove the worn tube and seat the replacement fully to ensure consistent electrical contact and wire-feed alignment. Follow the gun manufacturer's assembly guidelines to avoid damaging the gun neck or liner during service.
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