GZ GUOZHI 140Amp MIG Welder

GZ GUOZHI 140Amp MIG Welder


The GZ GUOZHI 140Amp MIG Welder is a versatile welding machine designed for both beginners and experienced welders. With its 3-in-1 multi-process capabilities, advanced technology, and portable design, it promises efficiency and ease of use. In this comprehensive review, we will explore the key features, performance, and overall value of this welder, providing insights to help you make an informed purchasing decision.

Summary of the GZ GUOZHI 140Amp MIG Welder

The GZ GUOZHI 140Amp MIG Welder stands out for its multi-process functionality, which includes MIG, Stick, and Lift TIG welding. This machine is equipped with synergic control for simplified operation, making it suitable for a wide range of welding tasks. It also features advanced safety protections and a compact, portable design.

GZ GUOZHI 140Amp MIG Welder
GZ GUOZHI 140Amp MIG Welder

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Tech Specs

Let’s take a closer look at the technical specifications of the GZ GUOZHI 140Amp MIG Welder:

ProcessesMIG, Stick, Lift TIG
Current OutputDC
Input Voltage110V
MIG Output140A
Stick Output140A
TIG Output140A
Duty Cycle60% at 140A
Wire Diameter Capacity0.03″ & 0.035″ (0.8mm & 0.9mm) Flux-Core
Gas TypeGasless
Weight22.6 lbs
Dimensions (LxWxH)‎16.5 x 7.6 x 12.7 inches
Safety FeaturesOverheating, Overcurrent, Overvoltage, Overloading
Additional Accessories Included10-ft MIG Gun, 10-ft 500A Electrode Holder, 10-ft 500A Work Clamp



The GZ GUOZHI 140Amp MIG Welder delivers exceptional performance across its various welding processes. Its synergic control automatically adjusts voltage and wire feeding speed based on the amperage setting, ensuring a stable welding arc and minimizing spatter. This makes it ideal for both light and medium-duty welding tasks. The machine can handle flux-core wire for MIG welding and supports rods up to 1/8 inch for Stick welding. Additionally, it can weld stainless steel with an optional TIG torch.


This welding machine offers a range of advanced features designed to enhance usability and performance:

  • 3-in-1 Multi-Process Functionality: Supports MIG, Stick, and Lift TIG welding, making it versatile for different welding needs.
  • Synergic Control: Simplifies the welding process by automatically adjusting parameters, making it user-friendly for beginners while allowing manual adjustments for experienced welders.
  • Advanced Technology: Wide voltage design (90V-140V) ensures stable operation even with voltage fluctuations. It also performs well in cold temperatures (down to -15°C).
  • Safety Protections: Equipped with overheating, overcurrent, overvoltage, and overloading protections, ensuring safe operation.


Weighing just 22.6 lbs and featuring a compact design, the GZ GUOZHI 140Amp MIG Welder is highly portable. Its small size makes it easy to carry and ideal for outdoor repairs and aerial work. The ergonomic design enhances overall user experience by facilitating easy transportation and handling.


The GZ GUOZHI 140Amp MIG Welder offers excellent value for money, given its robust construction, versatile functionality, and competitive pricing. It provides an affordable option for both professionals and hobbyists looking for a reliable welding solution without a significant financial investment.

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Our Take on the GZ GUOZHI 140Amp MIG Welder

First Impressions and Usability

From our extensive experience using the GZ GUOZHI 140Amp MIG Welder, we can attest that it is a solid performer, especially given its price point. The welder’s compact and lightweight design makes it extremely portable, an advantage for those who need to carry it to different job sites or perform aerial work. The initial setup is straightforward, and the digital display aids in making precise adjustments.

Performance and Features

The multi-process capability of this welder (MIG, Stick, Lift TIG) provides a versatile range of welding options, which is quite impressive for a machine at this price. The synergic control feature significantly eases the welding process, particularly for beginners. The machine automatically adjusts voltage and wire feed speed based on the selected amperage, ensuring a stable arc and reducing spatter. However, the inability to separately adjust wire speed from current control was a minor inconvenience we noted.

Build Quality and Safety

In terms of build quality, the GZ GUOZHI 140Amp MIG Welder is robust enough for light to medium-duty tasks. We did not encounter any significant issues during our use, although we did notice that the electrode holder can be prone to overtightening, which could cause some of the copper wires to snap. This did not affect the machine’s performance but is something to be cautious about. The grounding clamp is of high quality and better than what we’ve seen in other budget welders.

User Feedback and Support

The overall user feedback aligns with our experience. Most users found the welder to be easy to use and effective for their needs, especially for small projects and hobby welding. The support from GZ GUOZHI is commendable, as they are responsive and helpful with any queries or issues. However, we agree with the criticism regarding the manual. It lacks detailed instructions and could benefit from better explanations of the machine’s functions and settings.

Pros and Cons from Our Perspective


  • Versatile multi-process functionality: Suitable for a variety of welding tasks.
  • Synergic control: Simplifies the welding process for beginners.
  • Portable and lightweight: Easy to carry and ideal for on-site repairs.
  • Advanced safety features: Includes protections for overheating, overcurrent, overvoltage, and overloading.
  • Good value for money: Affordable without compromising on essential features.


  • Limited instruction manual: More detailed guidance would be beneficial.
  • Non-detachable MIG gun: Could be inconvenient for storage.
  • Inability to separately control wire speed: Slight limitation in fine-tuning settings.

Our Opinion

From our extensive use and assessment, we can conclude that the GZ GUOZHI 140Amp MIG Welder is an excellent choice for both beginners and seasoned welders who need a portable and versatile welding machine. Its performance, combined with advanced features and safety protections, makes it a reliable tool for a variety of welding projects. While the instruction manual could be improved, the overall value and functionality of this welder make it a worthy investment.

Pros and Cons


  • Versatile multi-process functionality
  • Synergic control for easy operation
  • Compact and lightweight design
  • Advanced safety features
  • Affordable pricing
  • Comprehensive warranty coverage


  • Limited to DC output only
  • Additional TIG torch required for stainless steel welding
  • Basic wire diameter capacity

What to Know Before Buying

Before making a purchase decision, consider the following factors:

  • Welding Processes: The GZ GUOZHI 140Amp MIG Welder supports MIG, Stick, and Lift TIG welding. If you require AC welding capability for materials like aluminum, you may need to explore alternative options.
  • Current Output: Ensure the machine’s current output is compatible with your specific welding requirements, including material thickness and welding position.
  • Portability: The lightweight and compact design make it ideal for mobile welding tasks. However, for more stationary setups, you might consider a larger, more permanent welding machine.

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Best Features of the GZ GUOZHI 140Amp MIG Welder

Despite its limitations, the GZ GUOZHI 140Amp MIG Welder boasts several standout features:

  • Versatile Multi-Process Functionality: Supports MIG, Stick, and Lift TIG welding.
  • Synergic Control: Simplifies settings adjustments, making it user-friendly.
  • Compact and Lightweight Design: Enhances portability for on-site jobs.
  • Advanced Safety Features: Includes multiple protections for safe operation.
  • Affordable Pricing: Provides excellent value for money.
  • Comprehensive Warranty Coverage: Offers a 2-year warranty for peace of mind.

Comparing with Alternatives

Let’s compare the GZ GUOZHI 140Amp MIG Welder with two alternative welding machines:

FeatureGZ GUOZHI 140Amp MIG WelderEastwood Elite MP200iSSIMDER ARC140N
ProcessesMIG, Stick, Lift TIGMIG, Stick, TIGStick, ARC, Lift TIG
Current Output140A200AUp to 140A
Input Voltage110V120V/240V110V / 220V
DisplayDigitalDigitalLED Digital
AC Frequency ControlNoYesYes
Wire Compatibilityф0.03″ & ф0.035″ Flux-Core4 or 8 inch wire spools (11 lb. max weight)1.6mm-3.2mm
Duty Cycle60% at 140A60% at 200A60% at 110V, 100% at 75A / 60% at 220V, 100% at 105A
Weight‎22.6 lbs50 lbs12.5 lbs
Dimensions (LxWxH)‎16.5 x 7.6 x 12.7 inches35.20 x 19.88 x 30.28  inches14.96 x 6.3 x 11.02 inches

Final Verdict

The GZ GUOZHI 140Amp MIG Welder emerges as a versatile and reliable choice for both amateur and professional welders. Its 3-in-1 functionality, synergic control, and advanced safety features make it a compelling option for various welding tasks. While it lacks some advanced features like AC frequency control and the duty cycle specification, its overall performance and portability offer significant value.

In conclusion, the GZ GUOZHI 140Amp MIG Welder provides a robust solution for a wide range of welding applications. Its ease of use, combined with its multiprocess capabilities and safety features, makes it a worthy investment for anyone looking to enhance their welding capabilities.

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