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Black and grey steel-copper welding conduit liner, 15 ft coiled length, 0.6 mm bore for .023-.025 in wire

Miller Enterprises

Miller Enterprises 159698 Welding Conduit Liner 15 ft hand tool

SKU CH-6H5X-3NPP9 MPN 159698

Welding conduit liner for MIG guns, 15 ft length, handles 0.023–0.025 in wire

  • Product typeAngle, Pitch & Slope Locators
  • Smooth wire feed with .023 to .025 in diameter range
  • 15 ft length reduces liner changes on long runs
  • Steel and copper construction resists wear in MIG welding
  • Fits M-10, M-15, M-25, M-80, M-100 and M-150 guns
  • Compatible with Series H200L4 and HR100 welding systems

Welding Conduit Liner 15 ft

This new Miller Enterprises liner feeds wire in MIG welding guns. It fits the H200L4, HR100 and M-Series models including the M-10, M-15, M-25, M-80, M-100 and M-150 guns. The steel and copper construction resists wear during high-volume welding.

Wire diameter range 0.023 to 0.025 in

The liner accepts wires from 0.023 in to 0.025 in diameter, matching the listed M-Series guns. Builders using thicker or thinner wire should select a different liner. Guns outside the compatible model list will not feed correctly with this part.

Overall length 15 ft

The 15 ft length determines reach from the wire feeder to the gun. Cut the liner to the exact gun length during installation. A liner that is too short or too long will cause feeding problems.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 68% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameMILLER ELECTRIC
Product typeAngle, Pitch & Slope Locators

Questions about this item

How is the 15 ft liner installed into the M-Series gun, and what step is often missed?

Feed the steel/copper liner through the conduit from the feeder end, matching the .023–.025 in wire range; the step often missed is trimming the liner flush with the gun’s contact tip so the bore stays at .6 mm and wire feeds without drag.

What maintenance or replacement will the liner need after extended MIG welding?

The liner is a consumable; replace it when wire feed becomes erratic or the .6 mm bore shows wear, typically after several spools of .023–.025 in wire on M-10, M-15, M-25, M-80, M-100 or M-150 guns.

What limit appears first during sustained high-amperage MIG welding with this liner?

Heat buildup in the steel/copper liner degrades the .6 mm bore surface, increasing friction on .023–.025 in wire and causing feed interruptions before the 15 ft length itself becomes an issue.

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