Linlong OMNI210 Multi-Process MIG, MMA and TIG Welder

What the manufacturer publishes

Values as the manufacturer publishes them for this model, with the source for each line.

Supply

Single-phase 110 / 220 V ±15%, 50/60 Hz [1]

Current on 110 V

MIG 40–120 A; MMA 20–120 A; TIG 5–120 A [1]

Current on 220 V

MIG 40–200 A; MMA 20–200 A; TIG 5–200 A [1]

Duty at 110 V, 120 A

MIG 30%; MMA 20%; TIG 50% [1]

Duty at 220 V, 200 A

MIG 20%; MMA 20%; TIG 40% [1]

Duty reference

40°C ambient, ten-minute cycle; no continuous rating published [1]

Rated input current

110 V: MIG 35.7 A, MMA 44.3 A, TIG 26.4 A. 220 V: MIG 35.7 A, MMA 41.7 A, TIG 26.8 A [1]

Weight and carton

Net 33.5 kg; gross 37.1 kg; carton 654 × 355 × 683 mm [1]

Wire feed

1 kg and 5 kg reels interchangeable; spool-gun connector [1]

TIG and enclosure

AC/DC in TIG mode as described by Linlong; IP21, insulation class F [1]

One power source, three processes, two supplies

Linlong builds the OMNI210 as one machine for MIG welding, stick (MMA) and TIG welding. Supply is single-phase, 110 V or 220 V within ±15%, at 50/60 Hz. The operating table gives a separate column for every process on every supply, six columns in all.

On 110 V, all three processes top out at 120 A. MIG starts at 40 A, MMA at 20 A and TIG at 5 A. On 220 V the starting points stay the same and the top rises to 200 A. The 210 in the name is a model number; the highest current Linlong publishes is 200 A.

Linlong also describes AC/DC output in TIG mode, a spool-gun connector and a feeder that takes either 1 kg or 5 kg reels. The machine weighs 33.5 kg net and is rated IP21 with class F insulation.

Plan around the process you run most

Buying guidance

Every duty figure is set at 40°C over ten minutes, and each belongs to one process on one supply. At 110 V and 120 A, MIG is rated 30%, MMA 20% and TIG 50%. At 220 V and 200 A, MIG and MMA are both 20% and TIG is 40%.

A shop that mostly runs wire should therefore plan around the MIG figure, however generous the TIG number looks. Linlong publishes no continuous-current points. If you weld long seams, ask for the full duty curve in each mode you need. The torch, electrode holder and return lead have their own limits, so compare their duty rating with the source as well.

Running it on 110 V and on 220 V

Buying guidance

Linlong lists both voltages but gives no detail on how the machine changes between them, or whether each market receives a different version. Request the nameplate and manual for the exact unit on your quote, and how it switches supply. Tell Linlong where the welder will work, whether it moves between sites and which plugs you need.

Input current changes with the process. On 110 V, MIG draws 35.7 A, MMA 44.3 A and TIG 26.4 A. On 220 V the figures are 35.7 A, 41.7 A and 26.8 A. Hand the whole table to your installer and size the circuit from the highest figure among the processes you will run. The 200 A output and the low TIG value are the wrong starting points. Ask Linlong for the protection, earthing and cable requirements, and check any generator against them.

Questions to raise about AC/DC TIG

Buying guidance

Linlong's Chinese description says TIG mode offers AC/DC output. The data gives no AC frequency range, balance control or aluminium procedure. Ask which TIG controls the quoted revision carries, and whether the torch, remote control, gas parts and arc-start method come in the box.

TIG starts at 5 A on either supply, with a different upper limit on each. For thin material, ask for a demonstration on your own joint, including starts and stops. For aluminium, send the base alloy, filler alloy, thickness and the result you need, and have Linlong weld a sample with the full TIG package you will receive.

Reels, spool gun and consumables

Buying guidance

The feeder accepts 1 kg and 5 kg reels. Ask which reel dimensions it takes, how the reel is held, which drive rolls come fitted and which torch ships as standard. A spool-gun connector lets a gun be plugged in; it tells you nothing about which gun, if any, is supplied. If you need one, ask for its model, control connection, wire range and settings.

Wire and electrode sizes share merged rows in the multi-process table, so it is hard to tell which size belongs to which mode. Ask for a consumable chart for each process and supply. The quote should name the wire classification, diameter, liner and tips, and changing materials or feed setups should come with a parts list and setup steps.

A 33.5 kg machine needs a planned home

Buying guidance

At 33.5 kg net and 37.1 kg gross, the OMNI210 is far heavier than a small hand-carried inverter, even though both may be sold as multi-process machines. Plan how it will be moved, stored and reached at each work bay. The carton measures 654 × 355 × 683 mm; ask for the size of the machine itself if bench space is tight.

Ask whether a stand or trolley is offered, and request the handling instructions. Leave room for cable routing, reel changes and service access. Linlong lists IP21 and insulation class F. For outdoor or dusty sites, ask for the model's operating limits and site requirements.

Trial every mode you plan to use

Buying guidance

A three-in-one welder can replace several power sources, but only when changing modes is quick and the right parts arrive with it. Ask Linlong to demonstrate each process you need with the package it will ship. Note the settings, any parts swapped, the changeover time and the inspection result for each joint.

Build the quotation around those modes. List the standard unit apart from optional torches, spool gun, leads, regulator and remote. With a recorded trial and a full bill of supply, the OMNI210 becomes easy to weigh against another multi-process welder or a set of separate machines. For light single-process wire work, compare Linlong's smaller 110 V wire welder.

Get these answers on paper

Buying guidance

Before the order is placed, ask Linlong to write down the following.

The exact revision, how it moves between 110 V and 220 V, and the nameplate for your market.

Full duty curves for each process you will use, with ratings for the torch, holder and leads.

The TIG controls fitted, the spool gun if one is included, and every item in the box.

Service part numbers for the quoted revision.

Compare the complete configuration

Swipe the table sideways to read the quotation checks.

A useful brief for the supplier

Fill in each item. Ask the supplier to respond against the same specification so two offers can be compared.

1. Your material, joints and the mix of MIG, MMA and TIG work you expect.
2. Supply voltage and circuit at each site, and whether the welder will move between 110 V and 220 V.
3. Full duty curves and accessory ratings for every mode you will use.
4. Wire or electrode classification, reel size and any spool gun needed.
5. TIG controls, torch, remote, arc start and gas parts required.
6. How the machine will be moved and stored at the work bay.
7. A demonstration of each mode, an itemised bill of supply and service part numbers.

Buyer questions

Sources

Figures come from the manufacturer's published data, checked on the date shown. Before ordering, ask for a written, model-specific answer on availability, certificates, delivery and warranty.

1. Linlong OMNI210 catalogue table · Zhejiang Linlong Welding Equipment

   Manufacturer publication · Checked 2026-10-11

   Linlong's model page for the OMNI210, with its feature description and the six-column table of current, duty, input and weight figures.

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