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S7

S7 200Amp MIG Welder - 4 in 1 Multiprocess Welding Machine for Gas/Gasless Welding, Lift TIG, and Stick ARC Welding - Dual Voltage 110V/220V

    • Based on 532 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 25
Order within 18 minutes
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Features

  • Versatile 4 in 1 Welding MachineThis multiprocess welding machine is perfect for MMA, Lift TIG, flux MIG, and gas MIG welding. Choose from 4 welding modes to suit your needs.
  • Synergic Control for Easy UseAdjust the amperage or wire thickness and the voltage and wire feeding speed will automatically change. Even beginners can use it with ease.
  • Gas/Gasless Welding OptionsChoose between Flux Core Wire (Gasless) or Solid Wire (Gas) welding. This welder can handle 2 lb and 5 lb rolls of wire 0.8mm~1.0mm Flux Core Wire/Solid Wire, with a maximum welding thickness of 4.5mm.
  • Lift TIG/ARC Welding CapabilitiesLift TIG is available with a TIG Torch that fits WP17V (not included in the package). TIG welding thickness ranges from 0.5MM-3MM, making it suitable for thin work-pieces such as stainless steel, alloy steel, carbon steel, and more. Arc welding fits rods E7018, E6013.
  • Powerful and Safe This 200A welding machine can weld mild up to 4.0mm plate and is equipped with an overload and overheating system, making it safe to use.

Manufacturer: ‎win-win


Part Number: ‎UPC


Item Weight: ‎21.9 pounds


Package Dimensions: ‎16.8 x 12.8 x 10.8 inches


Item model number: ‎MIG


Size: ‎15 x 10 x 7 inches


Color: ‎Blue


Style: ‎MIG01


Material: ‎metal


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: Monday, Nov 25

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

    • Quality
This machine is an all around beast. Works wonderfully. The biggest issue is that there's no real directions to it. Not that big of a deal though. It's like any other welding machine. PRACTICE.... See what settings work best for the task at hand and the type of material you want to weld. I love it. Great price. Easy to use. Small and very lightweight. ... show more
Reviewed in the United States on July 16, 2023 by Todd Michael Knaub
    • 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
    • nice lightweight versatile welder
Hooked this welder up and did some flux testing. I also connected it to a load bank and tried various resistance settings to maximize power output. Here is what I learned. The various weld settings are as follows. flux .8, flux 1.0, mig .8 seemed to all function the same. Voltage output stayed the same, along with maximum power output. stick also has the same maximum output but the output stays hot. Once the output has a load on it, the welder will not switch away until the load is disconnected. I didn't test lift arc. The leftmost dial controls the voltage slightly with a +3 to -3 adjustment. I turned it to +3 to get the maximum power. OK, the maximum power I was able to get with 233 VAC to the machine was a measured 174 amps of welding current at 16.5 VDC. I was unable to get 200 amps of current, suggest this machine be renamed the MIG-175 The welder is light, versatile and works well on both 120 and 240 VAC circuits. I didn't test maximum output with 120 VAC but assume it would trip the breaker as others reported so depends on your circuit breaker to some extent. Feeder works well but the ground cable is way too short so will be replaced soon. The Arc stinger arrived with a broken piece although doesn't affect it's operation. I didn't test as I have better stingers available. ... show more
Reviewed in the United States on July 12, 2023 by JosephC
    • Great product
Review Image by Dustin Jones Dustin Jones
I like it it rolls really good very impressed I did not realize that you have to plug the lead back into itself and made a bad choice to return the item before figuring out instructions not very clear but works very good very very happy A+ Plus
Reviewed in the United States on February 19, 2024 by Dustin Jones Dustin Jones
    • Small connectors, terrible at stick, mig is still good
Review Image by Chris Chris
Maybe if I spent like 30$ more I'd get a way better welder. I don't recall how much I spent on my 160a stick welder but it was a Chinese brand from eBay new at the time. My point being is this 200a special has lugs no larger than the diameter of a sharpie. For stick welding this will have difficulty with 1/8" sticks this will affect the metal thickness that can be welded via stick but mig is the best way Today I mig welded two 1/4' mild steel plates or 6.35mm thick on 220v. Ground it down and found a clean beautiful weld. Using the included gasless fluxcore spool. Take your time doing small circles slowly advancing and you can get good penetration in one pass. In summary this won't be a good stock welder but is great at mig, it can do tig which is neat but I haven't tried that ... show more
Reviewed in the United States on September 26, 2023 by Chris Chris
    • 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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