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S7

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

  • Based on 642 reviews
Condition: New
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$99.99 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jun 25
Order within 5 hours and 47 minutes
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Features

  • This multi-process welding machine: supports Gas/Solid Wire MIG, Gasless Flux Core MIG,Stick/ARC, Spot Welding, and Lift TIG. It also includes an optional spool gun connector (TIG gun and spool gun sold separately).
  • Wire Feeding Speed: 4.5-5 meters per minute. Compatible with generator use.Adjust the amperage or wire thickness and the voltage and wire feeding speed will automatically change,easy to work with beginners or professional welders
  • Powerful Welding Capability with Enhanced Safety: Engineered for safety, this welder features VRD and comprehensive protection systems, including safeguards against overcurrent, overvoltage, overload, and overheating. With its advanced overload and thermal protection, you can weld confidently and safely.
  • Versatile for Various Welding Needs: Compatible with .023/.030/.035 solid wire, .023/.030/.035 flux core wire, supporting up to 5-pound rolls.
  • Applicable: Small and Medium Welding Businesses,DIY Enthusiasts and Hobbyists,Professional Welders and Technicians,Educational Institutions,Farm and Ranch Owners

Manufacturer: ‎win-win


Part Number: ‎UPC


Item Weight: ‎21 pounds


Package Dimensions: ‎17 x 13 x 11 inches


Country of Origin: ‎China


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: Wednesday, Jun 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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Quality and powerful unit
Works very well , compact and easy to use. It puts out enough to weld 1/4 inch steel no problem
Reviewed in the United States on March 27, 2025 by Mestizokid
    • Best beginner welder for price by far
Review Image by Cody R. Cody R.
Absolutely Love my welder. It's a Great Deal and best all around welder to learn on and beginner welders to get comfortable. Works excellent! Very happy with this welder for the price.
Reviewed in the United States on March 12, 2025 by Cody R. Cody R.
    • 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
    • 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 to own.
Price was fair and a well made product for fast and easy fixes. Light enough to be comfortable for most to use and size is desirable and not cumbersome. Nice bargain without a huge price.
Reviewed in the United States on April 12, 2025 by Diane Bennett
    • Dead after one hour of use
Used this twice before the mig wire feeder just stopped. No current in the wire, no obvious signs of failure but is now dead. Turns on, fan runs, but that's it. I expected to get more use than an hour or so.
Reviewed in the United States on May 18, 2025 by Innov8er
    • S7 la bella y la bestia fusionadas 👌🏼
10 estrellas para el producto. Hombre descubrir soldadora regia, hombre ser feliz. No miento, quiero comprarme otra soldadora de las mismas solo para tenerla de reserva y otra que es para soldadura MMA de 250 amperios de la misma marca S7. Señores si quieren tener una buena soldadora no lo duden, cómprenla. Acá en Colombia varios amigos la vieron, la probaron y quedaron fascinados por el diseño, el precio y su excelente funcionamiento y ya empezaron a pedirla. En Fluxcore trabaja con alambre de 0.8 y 1.0 y en MIG con gas trabaja con alambre de 0.8. Trabaja con voltaje 110 o 220 y el cambio lo hace automáticamente. De verdad es una máquinota muy bien hecha y muy resistente, el color es agradable y la pistola es bastante robusta. Tip para el uso del Flux core. Usen Vaselina pura en la punta de la pistola para que no se les bloqueé la salida del alambre por las chispas al soldar, la veselina pura funciona de maravilla. ¡¡¡Gracias al vendedor y gracias a Amazon por el envío a Colombia!!! ¡Los felicito por tan buena logística! 🌟🌟🌟🌟🌟🌟 ... show more
Reviewed in the United States on April 20, 2025 by Quiero empezar diciendo que es mi primera experiencia con este tipo de dispositivos y la verdad es que mi primera impresión ha sido espectacular, me ha gustado muchísimo este tipo de audífonos, ya no me produce rasquiña en el oído como la producen los que van dentro del oído. Sencillamente espectaculares por el sonido y que puedes estar pendiente del resto del mundo sin dejar tu música al mismo tiempo. En cuanto al sonido me gustó mucho y la batería tiene muy buena durabilidad
    • Amazed
Thus far I'm shocked at what this lil guy can do on 220v. Only comes with a 1# spool of .030 flux core wire but boy howdy, almost no spatter and ran smooth. The dang argon/CO2 tank costs twice as much or more than the welder. Now that I've gotten a tank of 75/25 and solid wire I can say it's a darn good Mig welder as well. Only real down side is the wire speed dial doesn't have numbers but no big deal. ... show more
Reviewed in the United States on March 10, 2025 by mark

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