Linlong TIGACDC200GD AC/DC Pulse TIG Welder for Aluminum and Steel

What the manufacturer publishes

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

Processes

TIG and MMA; high-frequency arc ignition [1]

Supply

1-phase, 110 V or 220 V (±15%), 50 or 60 Hz [1]

Current ranges

On 110 V, TIG 5–120 A and stick 20–120 A; on 220 V, TIG 5–200 A and stick 20–180 A [1]

Rated input

TIG: 2.2 kW (20.2 A) on 110 V, 4.5 kW (20.5 A) on 220 V. Stick: 3.7 kW (33.8 A) and 6.1 kW (27.8 A) [1]

Duty points (40 °C ambient, ten-minute cycle)

120 A at 25% / 76 A at 100%; 180 A at 25% / 114 A at 100%; 200 A at 25% / 126 A at 100% [1]

Other electrical values

No-load voltage 62 V, power factor 0.73, efficiency 80% or more [1]

Adjustments listed

AC frequency, pulse frequency, pulse ratio, peak and base current, start and crater current, up- and down-slope, pre- and post-flow, and a setting translated as gap width [1]

Controls and options

2T/4T, 32-bit MCU with stored parameters, 50 kHz inverter, optional foot control [1]

Enclosure

IP21, insulation class F, fan cooled [1]

Weight and carton

Net 19.5 kg, gross 22 kg, carton 590 × 390 × 475 mm [1]

The machine in brief

The TIGACDC200GD is the AC/DC pulse member of Linlong's 200 A TIG class. It offers two functions, TIG and MMA, and strikes the TIG arc with high frequency. The supply can be 110 V or 220 V single-phase at 50 or 60 Hz.

On 220 V the machine reaches 200 A in TIG and 180 A in stick, with TIG starting at 5 A. On 110 V both modes stop at 120 A. The panel carries AC frequency, pulse frequency and ratio, peak and base current, start and crater current, slopes and gas timing, with 2T/4T trigger modes and stored parameters on a 32-bit MCU. Overvoltage, undervoltage and overcurrent protection are listed. The unit weighs 19.5 kg net in an IP21, fan-cooled case.

Why aluminium needs the AC side

Buying guidance

Aluminium carries an oxide skin that melts far hotter than the metal under it. On an AC arc, the electrode-positive half of each cycle strips that skin, and the electrode-negative half puts heat into the joint. A DC-only source has no cleaning half, which is the reason aluminium shops buy AC/DC machines.

Two settings shape an AC arc. AC frequency tightens or widens the arc cone. Balance, also called cleaning width, moves the split between oxide cleaning and penetration. Linlong lists AC frequency plus a setting whose literal translation is gap width, which may be its name for balance. Neither comes with a range, and no waveform options are given. Ask for both ranges and have a sample welded on your own alloy and thickness.

Ratings that do not name AC or DC

Buying guidance

Every electrical figure for this model, from input power through the current ranges to the duty row, matches the TIG200P column of Linlong's DC pulse TIG200PGD listing. The table never says whether the TIG values apply to AC or DC. AC TIG often loads an inverter harder than DC at the same current, which is why many makers print separate AC figures or derate the AC side.

Ask Linlong for the duty cycle and current range in AC mode. Check the bottom end too. The TIG range starts at 5 A, but thin aluminium sheet needs a steady AC arc at low current, and reaching 5 A on DC says little about that. Ask what minimum AC current Linlong will stand behind. If the reply simply repeats the shared table, note that against this offer when you compare suppliers.

Three duty pairs across four columns

Buying guidance

The table has four operating columns: stick and TIG on 110 V, then stick and TIG on 220 V. The duty row has three pairs. The reading that fits the current ranges is this: 120 A at 25% with 76 A continuous covers both 110 V modes, 180 A at 25% with 114 A continuous is 220 V stick, and 200 A at 25% with 126 A continuous is 220 V TIG. Linlong does not label the pairs, so ask it to state the column for each pair in writing.

All three pairs are quoted at 40 °C on a ten-minute cycle, which is a tough test condition. On 110 V the machine tops out at 120 A in both modes, which limits how thick an aluminium joint you can weld in a single pass on that supply.

Heavier and bulkier than the DC version

Buying guidance

With the same published ratings, the AC/DC unit weighs 19.5 kg net against 15 kg for the DC TIG200P. Its carton is 590 × 390 × 475 mm, against 490 × 245 × 450 mm for the DC model. That works out at about 0.11 cubic metres per unit against roughly 0.054, so each machine takes about twice the container space.

Linlong gives no reason for the extra weight. The AC output stage or a different case could explain it, but plan freight and handling on the published figures. Linlong also describes the machine as small, light and suitable for home users. At almost 20 kg it is portable, and the IP21 rating keeps it to sheltered, dry locations.

Arc start and the stick function

Buying guidance

This model's page names two functions, TIG and MMA, and leaves out the lift TIG start that appears on Linlong's DC pulse page. If the welder will work near electronics that HF can upset, ask whether a lift start can be enabled. Linlong says its HF ignition has a higher success rate.

The MMA mode is listed without the VRD, arc force and hot start details given for the DC model. They may be fitted, but the page does not list them, and some sites require VRD. Linlong offers to customise appearance, current, manual and packaging. The certificate list on the page covers the whole company, so ask for the certificate that names this model in the version you will ship.

What to pin down before you sign

Buying guidance

Request written answers from Linlong on these points for the TIGACDC200GD as quoted.

AC-mode duty cycle and current range, listed apart from the DC figures, and the column each published duty pair belongs to.

The AC frequency range, the balance or cleaning-width range and the lowest stable AC current, shown on a weld sample of your alloy and gauge with the settings recorded.

Whether lift TIG and stick VRD are available, how the machine changes between 110 V and 220 V, and which plug it ships with.

The certificate for this exact model and voltage, and whether any own-brand changes alter it.

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. Aluminium alloys and thicknesses you weld, plus any steel or stainless work
2. The thinnest sheet you weld, so Linlong can state a minimum AC current
3. The TIG current you hold continuously and the length of a typical run
4. Supply voltage at the site, available breaker size and plug type
5. Whether lift start is needed because of nearby electronics
6. Whether stick work on your sites requires VRD
7. Destination market and any own-brand changes, so the certificate matches the unit shipped

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 TIGACDC200GD product page · Zhejiang Linlong Welding Equipment

   Manufacturer publication · Checked 2026-11-04

   Linlong's feature list and specification table for this one model. It gives current ranges, input draw, duty points, the adjustment list, weight and carton size.

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