EACO manufactures AC/DC TIG welding machines with pulse control for professional fabricators, welding equipment distributors, and industrial procurement teams. Our range includes 200A, 300A, and 350A AC/DC pulse TIG models designed to handle different welding materials, power supply conditions, and production requirements.

Combining AC TIG, DC TIG, and pulse welding capabilities, these machines support aluminum and aluminum alloy welding as well as applications involving stainless steel, carbon steel, and other suitable metals. Whether you are sourcing an AC DC TIG welding machine for sale for a fabrication workshop or evaluating equipment for industrial production, compare the available models to find a configuration that matches your welding process and operating requirements.

Key Features of AC/DC Pulse TIG Welding Machines

1. Dual AC/DC Welding for Different Materials

AC and DC welding modes allow operators to work with different metal types using one power source. AC TIG is commonly selected for aluminum welding because alternating current supports oxide cleaning at the weld surface. DC TIG is widely used for stainless steel and carbon steel, as well as other suitable metals, depending on the welding procedure and material requirements.

For manufacturers working with multiple materials, an AC/DC TIG welding machine can provide greater process flexibility than a DC-only unit. The appropriate model should be selected according to material type, thickness, joint design, and required welding output.

2. Adjustable Pulse TIG Control

Pulse TIG alternates between peak and base current to help control heat input and the weld pool. This function can be useful when welding thin sections, controlling distortion, or producing consistent weld beads on precision workpieces.

Selected EACO AC/DC pulse TIG models provide adjustable pulse frequency and pulse width. Published specifications for the TIG 200P, TIG 300P, and TIG 350P AC/DC models include a pulse frequency range of 0.2–10 Hz and pulse width adjustment from 1% to 99%. Refer to the individual model specifications to confirm the available settings.

3. IGBT Inverter and Digital Control

IGBT inverter technology and digital control support precise parameter adjustment and stable welding output. On applicable models, operators can adjust welding current, pulse settings, AC frequency, cleaning width, and current upslope or downslope to suit different workpieces and welding procedures.

These controls are particularly relevant to production teams that need repeatable welding parameters across batches. Actual control functions and adjustment ranges vary by model.

4. TIG and MMA Welding Modes

Selected EACO AC/DC TIG welders support both TIG and MMA (stick) welding. TIG is suitable for applications requiring controlled heat input and clean weld appearance, while MMA provides an additional option for compatible fabrication, maintenance, and repair work.

Depending on the model, available functions may include 2T/4T operation, spot welding, remote current adjustment, and HF or Lift TIG ignition options. Buyers should confirm which functions are included in the selected configuration before ordering.

AC/DC TIG Welding Machine Models and Specifications

EACO offers different output capacities to accommodate a range of workshop and industrial welding requirements. The following table compares three representative models in the classic AC/DC pulse TIG series.

Note: These specifications are for the listed TIG 200P, TIG 300P, and TIG 350P AC/DC models. Duty cycle ratings depend on the welding process and specified test conditions. Confirm the complete technical datasheet for the exact model before purchase.

Applications of AC/DC Pulse TIG Welding Equipment

AC/DC pulse TIG welding equipment can serve manufacturers and fabrication businesses working with different metals and precision requirements. The appropriate current capacity and machine configuration depend on the actual workpiece, welding procedure, and production conditions.

• Aluminum fabrication: Aluminum components, sheet metal assemblies, enclosures, and other suitable aluminum workpieces requiring AC TIG welding.

• Stainless steel fabrication: Stainless steel equipment, furniture, housings, and precision metal components requiring controlled TIG welding.

• Automotive manufacturing: Compatible metal components, repair work, and fabrication operations where controlled TIG welding is specified.

• Aerospace and transportation: Suitable metal fabrication and component manufacturing applications subject to the applicable material, procedure, and quality requirements.

• Shipbuilding and heavy machinery: Selected fabrication and maintenance tasks where the required material, thickness, and welding procedure match the machine's capabilities.

• Industrial maintenance: Workshops handling different compatible metals and requiring both TIG and, on supported models, MMA welding.

How to Choose an AC/DC TIG Welding Machine

When purchasing an AC DC TIG welding machine for industrial use, maximum amperage alone is not enough to determine whether a model is suitable. Review the following factors before requesting a quotation.

1. Welding Material and Thickness

Identify the main materials to be welded, including aluminum, stainless steel, or carbon steel, and provide the usual and maximum workpiece thickness. These details help determine whether AC, DC, pulse control, and a particular output range are appropriate for the application.

2. Input Voltage and Phase

Check the electrical supply available at the installation site. For example, the published TIG 200P AC/DC specification lists single-phase 220V input, while the TIG 300P AC/DC and TIG 350P AC/DC list three-phase 380V input. Confirm local voltage, frequency, and phase compatibility before placing an order.

3. Rated Duty Cycle and Operating Intensity

For production environments, compare the rated duty cycle at the specified temperature rather than choosing a machine based only on its maximum current. Consider typical welding current, operating duration, production volume, and required cooling arrangements to determine whether the equipment can meet the intended workload.

4. Pulse and AC Parameter Requirements

Different welding jobs may require different pulse frequencies, pulse widths, AC frequencies, and AC cleaning-width settings. If the application involves thin aluminum sections, appearance-critical welds, or repeatable production parameters, specify the required control functions when evaluating the available models.

5. Accessories and Configuration

Confirm whether the project requires a foot pedal, remote current control, TIG torch, water cooling, HF ignition, Lift TIG ignition, or other accessories. Availability may differ between models and configurations, so these requirements should be clarified before quotation.

Why Choose EACO as Your AC/DC TIG Welding Machine Manufacturer?

Established in 1987, Guangzhou EACO Welding Equipments Manufacture Co., Ltd. specializes in the research, development, and manufacturing of welding machines and plasma cutting systems. The company serves professional users across industries including automotive manufacturing, aerospace, shipbuilding, bridge construction, steel structures, metallurgy, and heavy machinery.

• Established manufacturing experience: Nearly four decades of experience in welding equipment development and manufacturing.

• Production facilities: A production base covering more than 4,000 square meters in Guangzhou, China.

• Research and development: Nearly 100 invention and utility model patents, according to the company's published information.

• Industrial application experience: Equipment developed for professional welding applications across multiple manufacturing sectors.

• Product reliability information: EACO reports an overseas product repair rate below 1%. This is a company-reported figure, not a guarantee of the repair rate for every model or application.

• Technical model selection: A range of AC/DC TIG welding machines with different output capacities and control configurations for buyers to evaluate against their application requirements.

Learn more about EACO's manufacturing and R&D background and company capabilities when evaluating a long-term welding equipment supplier.

AC DC TIG Welding Machine for Sale: Information for Buyers

If you are sourcing an AC DC TIG welding machine for sale for distribution, workshop equipment procurement, or an industrial project, providing clear technical requirements helps the manufacturer recommend a suitable configuration and prepare a more accurate quotation.

Before requesting a price, prepare the following information:

• Required model or welding current range.

• Welding materials and typical workpiece thickness.

• Available input voltage, phase, and frequency.

• Expected operating intensity and duty cycle requirements.

• Required welding functions, accessories, and cooling arrangements.

• Order quantity, destination market, and applicable certification or documentation requirements.

For importers, distributors, and industrial buyers comparing AC DC TIG welding machine manufacturers, these details also help clarify whether the proposed equipment meets the intended application and market requirements. Model availability, technical configurations, documentation, and commercial terms should be confirmed directly with the supplier.

Frequently Asked Questions

What is the difference between an AC/DC TIG welder and a DC TIG welder?

An AC/DC TIG welder supports alternating-current and direct-current TIG welding, making it suitable for applications involving aluminum and compatible steel materials. A DC TIG welder operates in DC mode and is commonly used for stainless steel, carbon steel, and other suitable metals. If your application does not require AC welding, compare the available DC Pulse TIG welding machines as an alternative.

How do I choose between a 200A, 300A, and 350A AC/DC TIG welding machine?

Consider material thickness, required welding current, duty cycle, power supply, and production intensity. A 200A model may suit applications that meet its output and operating limits, while 300A and 350A models provide higher current ranges for compatible applications. Review the complete model specifications rather than selecting by amperage alone.

Can an AC/DC pulse TIG welding machine weld aluminum and stainless steel?

AC TIG is commonly used for aluminum welding, while DC TIG is commonly used for stainless steel. The correct setup also depends on material grade, thickness, joint design, filler material, shielding gas, and the welding procedure.

What information should I provide when requesting a quotation?

Provide the intended application, material type and thickness, required current range, input power supply, order quantity, destination market, and any required accessories or technical documentation. These details help the supplier identify a suitable model and clarify the quotation scope.

Request a Quote for AC/DC TIG Welding Machines

Looking for an AC DC TIG welding machine manufacturer for your next procurement project? Share your material requirements, target output, power supply, and application details with EACO. Our team can help you evaluate the available models and confirm the relevant technical specifications for your requirements.