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S7

MIG Welder, 200Amp 4 in 1 Gas MIG/Gasless Flux Core MIG/Stick/Lift TIG Multi Process Welding Machine

  • Based on 695 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Nov 1
Order within 10 hours and 39 minutes
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Features

  • Supports Gas MIG, Gasless Flux Core MIG, Stick/ARC, and Lift TIG welding modes. Includes a spool gun connector (TIG torch sold separately) to meet all your diverse welding needs in one machine
  • Features a wire feeding speed of 4.55 m/min. When amperage or wire diameter is adjusted, voltage and wire speed automatically adjust for smoother operation
  • Built-in protections against overcurrent, overvoltage, overheating, and overload ensure safe operation during extended use. Weld with confidence thanks to its intelligent thermal control system
  • Works with .023, .030, and .035 solid or flux core wire and supports up to 5-pound wire rolls. Versatile enough for various welding jobs, from light repairs to medium-duty fabrication
  • Perfect for small and medium welding businesses, DIY hobbyists, professional welders, trade schools, and even farm and ranch applications. Compact yet powerful for use anywhere

Manufacturer: ‎win-win


Part Number: ‎UPC


Item Weight: ‎22.2 pounds


Package Dimensions: ‎17 x 12.65 x 11 inches


Item model number: ‎MIG


Color: ‎Green


Style: ‎mig welder


Material: ‎metal


Power Source: ‎ac_dc


Voltage: ‎110 Volts


Wattage: ‎12 Microwatts


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: May 27, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Nice MIG welder for half the price!
I'm a novice welder and bought this multipurpose unit to repair a couple of items for a friend who owns a golf driving range. I have done AC stick welding and some DC TIG (45 years ago) and can generally stick things together that won't come apart but the welds aren't very pretty... This unit arrived well-packaged and without damage. The unit auto-detects voltage, has good fit and finish, synergic operation, and is comfortably quiet with a five second or so cool down fan delay when the unit is powered off. It comes with an adequate stick stinger, an adequate ground clamp, an adequate MIG torch, a 2lb roll of 0.030 flux-cored wire, one 0.8/1.0 v-knurled flux core roller, three 0.8 contact tips, a spare gas shield, and a 2' long 220v to 110v adapter cable. It does not include a gas regulator, TIG torch or welding helmet. Wire, rollers, contact tips and gas shields are all of standard types and readily available for purchase at attractive prices. It should be noted that the knurled v-groove roller provided will accommodate 0.035 flux core on the 1.0 side of the roller. Cables appear to be of good quality and are about 6' long--on the short side (good for me, less bulk to stow), but long enough to do effective work adjacent to the machine which is lightweight and easily portable. Since I had to weld some thicker stock, I ran a dedicated 220v 50A drop to my preferred welding location and used that successfully. If I have a future requirement, I will put together a 220v 50A extension cord of adequate length. I haven't tried 110v operation yet. Harbor Freight has a low-end welding cart which easily accommodates this unit, its accessories, and a gas bottle should I venture into gas MIG or TIG welding in the future. It permits ready access to and stowage of the unit which is handy. I also bought their foldable welding table which permits better stability for the MIG torch when welding smaller items. Instructions for this welder were virtually non-existent. A quick internet search located instructions for a similar unit from another manufacturer that were well-written, intelligible, and effectively led me through the set-up process and considerations. As a novice welder, I'm not sure of what I don't know but was able to figure things out and make effective welds with a little experimentation. I practiced for an hour or two on some scrap of varying thicknesses I had laying around the garage to get a feel for wire speed and penetration, then had at it with the two repairs. With 220v service, I got good results using 0.035" flux cored MIG wire to overlay 3/16" plate onto 5/16" plate to repair a ball picker wheel mount. I then dialed things back to weld a probably 3/32" mounting bracket back on to a 3/32" mower deck without burn-through or other issue. The MIG torch is easier to use than my old HF AC stick welder as it enables me to get closer to and contact the work before I pull the trigger to strike an arc. Tack welding is easy even though this unit doesn't have a tack welding option. I can't comment on stick, TIG or gas MIG, but imagine similar good results. Overall, for a $150 unit, I'm delighted with my purchase! ... show more
Reviewed in the United States on April 5, 2024 by Silverseal99
    • Best welder for this price!
Excellent welder for a bargain! Works great and much better compared to my last one. I’m very happy with this purchase and would recommend to anyone who is thinking about buying one.
Reviewed in the United States on August 9, 2025 by D
    • Great quality welder for price
I haven’t welding in 20 years and my last experience with mig welding was so so. This unit came well-packed and loading the .035 fluxcore wire was easy. After some practice welds I finished my main project without issue. Like others, the instruction manual is sirely lacking in useful content. Also, the lack of a “recommended settings” sticker for various wire types, metals and thicknesses makes fir a lot of wasted time and materials. Individual controls for voltage, wire feed speed and amperage along with either multiple displays or a single display which changed to display the control that was being adjusted (which would also lock the setting so it could not change when bumped) would be helpful. I don’t believe these changes would add significantly to the price but would make this 4 in 1 welder the best on the market… ... show more
Reviewed in the United States on June 14, 2023 by azskies
    • S7 200amp mig welder
Great little welder before this I had an 800 dollar Lincoln welder in my shop I don't weld for a living but have been around it all my life an have built race car roll cages etc so I definitely have plenty of experience an let me tell ya this little inverter welder is impressive it welds every bit as good as the expensive Lincoln welder an is much more versatile I have also used it on about a 70ft run of light 12 gauge extension cord which is unheard of with conventional transformer welders it runs on both 110 an 220 v which drastically increases versatility as well not to mention the fact that it is a stick welder an for less than 50 dollars can run a tig which I haven't bought yet but plan to I don't run this welder every day so I can't say how it would be for someone who welds for a living in a commercial environment but for me who enjoys building an fixing things u can't go wrong with this welder it should also be fairly easy for someone nee to welding these kinds of tools typically don't come with some big book to school you on a new hobby but this machine is very easy to setup understand an use an absolutely welds as good as any high dollar machine iv ever used an iv used about every big name brand out there it's also very compact an light so between that an the fact that it can run on lower 110v on a long cord would make it great for farmers or people that might need to fix equipment in remote areas ... show more
Reviewed in the United States on October 2, 2023 by Christopher L.
    • Handy little welder.
Great little project welder! Seems to be pretty good quality for the cost. Haven’t had the chance to check the heat level on the 220 side but the 110 maxed out does good enough for my needs. Excited to use and learn more about welding!
Reviewed in the United States on June 24, 2025 by Amazon Customer
    • It's a Secret
Machine comes with no Product part list. Instruction manual is less than useless. Download the product PDF and prepare yourself for a laugh. Follow pdf instructions for wore insulation and LAUG harder. Didn't expect the manual or pdf to teach me too weld but it would be nice to know a parts list, so I know if I received everything, the possibly JUST THE BASIC MCHUNE SETUP. It's quite possible that a users manual and parts list was left out of mine but I doubt it. Tried YouTube S7 200A welder for information. NONE. Not saying it's a bad product but as of now it makes a Great Paper Weight. Oh might I add The paper the call a Manual, English translated from Chinese. Makes no sense if it's you're first time purchasing a Chinese product and reading what they call Instructions. Shirt Note. I'm 70 plus years old and have been in the Trades for 52 years pride myself in being able too read and follow direction and consider myself fairly knowledgeable in all building trades. So in closing if you're just a homeowner with little or no knowledge of mechanical things STAY AWAY. MR. B ... show more
Reviewed in the United States on February 25, 2024 by B. B.

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