Product Description
Service and Support You Can Count On
At GTW Welding Supplies, we stock everything you need to keep your MIG25-140 running like new—contact tips, nozzles, diffusers, drive rolls, guns, and wire in every common size. Whether you're welding today or 10 years from now, we've got your back with in-stock parts and real customer service. No vague online listings, no bots, no guessing games—just knowledgeable support from folks who know welding.
Experience the kind of lifetime support Amazon, Harbor Freight, and eBay just can’t offer.
From the backyard builder to the weekend warrior—this is your machine. Backed by a 3-year limited warranty and the GTW name, the Weldmark MIG25-140 is ready to weld whenever you are.
Weldmark MIG25-140 Inverter Wire Feed Welder – Built for the Garage, Barn, or Backyard Shop
Whether you're fixing fence posts on the farm, restoring that vintage muscle car, or fabricating your next weekend project, the Weldmark MIG25-140 is your go-to welder. Compact, portable, and powerful, this 120V inverter-based machine delivers smooth, precise welds without taking up half your workbench.
Designed with the home welder, hobbyist, or light-duty professional in mind, the MIG25-140 packs serious capability into a 31 lb frame. Its output range of 30–140 amps lets you tackle mild steel, stainless, and even aluminum (with optional spool gun), making it a versatile tool for nearly any small-shop welding task.
Key Features:
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30–140 Amp Output – Weld material thicknesses from auto panels to small farm implements
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Inverter Power – Delivers a clean, stable arc and reduced spatter, with a 30% duty cycle at 90A
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120V, 20A Input – Runs on standard household power, no special wiring needed
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Infinitely Adjustable Voltage & Wire Speed – Dial in the exact settings for cleaner, stronger welds
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Spot Timer & Thermal Overload Protection – Extra features for safety, precision, and ease-of-use
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Spool Gun Ready – Upgrade for aluminum projects without needing a separate welder
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Portable Size – 17.75" x 9.625" x 15.5" with built-in handles for easy transport
Included in the Box:
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10 ft MIG gun assembly
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Ground cable with clamp
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Flowgauge regulator & gas hose
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Extra contact tips
Bonus Add-On
Metal Man Workgear Steel Works Black Auto-Darkening Helmet
The Weldmark by Metal Man Workgear Steel Works Auto-Darkening Welding Helmet delivers professional-grade protection, comfort, and performance at an affordable price point. Built with a rugged black nylon shell, this helmet is designed to meet the rigorous demands of welding applications while ensuring user comfort and safety. The helmet meets or exceeds ANSI Z87.1 and CSA Z94.3 safety standards.
Equipped with Real View 2.5™ light state lens technology, the Steel Works helmet provides a true-color view with a DIN 2.5 light state and a variable shade range from 9 to 13. This allows welders to transition easily between applications with greater control and precision. The viewing area of 3.86 x 1.73 inches within a full lens size of 4.33 x 3.54 inches offers a wide, clear field of vision.
The helmet features auto On/Off, grind mode, and two independent arc sensors that enable fast and reliable lens darkening. Internal controls allow for sensitivity and delay adjustments to accommodate different welding environments and processes, including a 5 amp TIG rating.
Key Features:
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Lens Shade Range: Variable 9–13
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Light State: DIN 2.5 (Real View 2.5™ Technology)
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Viewing Area: 3.86 x 1.73 inches
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Lens Size: 4.33 x 3.54 inches
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Arc Sensors: 2
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Grind Mode: Yes
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Power Source: Solar and replaceable AAA batteries (included)
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Auto On/Off: Yes
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TIG Welding Compatibility: Rated to 5 amps
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Magnifier Lens Ready: Yes
Comfort & Ergonomics:
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Headgear: 7-point articulating with front and rear sweatbands for superior stability and comfort during extended use
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Weight Class: Lightweight for reduced neck fatigue
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Material: Durable, impact-resistant black nylon shell
Warranty & Compliance:
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Lens Warranty: 3 years
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Shell and Headgear Warranty: 3 months
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Safety Standards: Meets or exceeds ANSI Z87.1 and CSA Z94.3
The Weldmark Steel Works welding helmet is ideal for fabricators, professionals, and serious hobbyists who demand high visibility, responsive auto-darkening performance, and lasting reliability. Whether you're grinding, TIG welding, or working across multiple processes, this helmet delivers uncompromised protection and clarity.
