Inverter TIG Arc Welder WS-315 | Multi-functional TIG & MMA Welding Machine

In industrial fabrication and precision manufacturing, weld quality is not simply a matter of appearance—it is a direct determinant of product performance, safety, and longevity. The WS-315 inverter TIG/MMA welding machine is engineered to deliver the level of arc control and process stability that demanding applications require, offering 315 amps of precisely regulated welding power in a compact, industrial-grade package. From pipeline construction and pressure vessel fabrication to aerospace components and precision machinery, this welder provides the consistent, high-quality results that professional fabricators demand.

Industrial-Grade Inverter Technology for Uncompromising Stability

The WS-315 is powered by advanced industrial inverter technology that provides exceptional power conversion efficiency and arc stability. Unlike older transformer-based machines that are susceptible to voltage fluctuations and power drift, the inverter design maintains consistent output characteristics regardless of variations in the incoming power supply. This stability is critical in industrial environments where multiple high-power machines may be operating simultaneously, causing voltage sags and spikes that can disrupt less sophisticated equipment. The WS-315's ability to maintain a stable arc through these variations ensures that weld quality remains consistent throughout the production run, reducing scrap rates and improving overall manufacturing efficiency.

Professional TIG Performance for Critical Applications

TIG welding is the process of choice for applications requiring the highest levels of quality and precision, and the WS-315 excels in this mode. The machine delivers a smooth, concentrated arc that provides excellent control over the weld pool, allowing operators to produce joints with exceptional penetration and bead consistency. The high-frequency arc start system ensures clean, reliable ignition without the need for scratch starting, preserving the sharpness of the tungsten electrode and eliminating the risk of tungsten inclusions in the weld. For critical applications such as sanitary piping, pressure vessels, and high-purity systems, this level of start quality is essential for meeting stringent acceptance criteria.

MMA Capability for Versatile Shop Operations

When the job calls for heavier deposition rates or outdoor work where shielding gas may not be practical, the WS-315 transitions seamlessly to MMA (stick) welding mode. This process is widely used for structural welding, equipment repair, and field fabrication, offering strong penetration and excellent tolerance to less-than-perfect surface conditions. The WS-315's inverter technology provides a stable, smooth arc in MMA mode that is notably superior to traditional transformer machines, with better arc restrike characteristics and reduced spatter. This dual-process capability allows a single machine to handle the full spectrum of shop and field welding tasks, from fine sheet metal work to heavy structural fabrication.

Comprehensive Safety Protection for Uninterrupted Operation

Industrial welding operations cannot afford unexpected downtime due to equipment failure, and the WS-315 is designed to keep working when other machines would fail. The built-in overvoltage and overcurrent protection systems continuously monitor operating conditions, automatically shutting down the machine if abnormal conditions are detected. This protection is not simply a failsafe—it is an integral part of the machine's design that extends service life by preventing damage to sensitive components. For production facilities where welding is a critical process, the reliability provided by these protection systems translates to fewer interruptions and more consistent output.

Optimized Output for Superior Wire-Filling Welds

The WS-315 incorporates a specially shaped output characteristic that enhances performance in TIG wire-filling applications. The power curve is precisely calibrated to provide smooth, predictable current delivery during the addition of filler metal, ensuring that the wire melts evenly and combines cleanly with the base material. This results in weld beads that are uniformly flat and smooth, with excellent sidewall fusion and a pleasing appearance. The consistent quality of the finished weld reduces the need for post-weld finishing operations, saving time and labor in high-volume production environments.

All-Position Welding Excellence

The WS-315 delivers stable arc performance in all welding positions, making it suitable for the most challenging fabrication tasks. Whether welding pipe in the overhead position, making vertical-up fillet welds on structural steel, or performing flat-position sheet metal work, the machine maintains consistent arc characteristics that allow operators to achieve professional results. This all-position capability is particularly valuable in fabrication shops that work on diverse projects, as it eliminates the need for specialized machines or process adjustments for different welding positions.

Comprehensive Material Compatibility

The WS-315 is compatible with the full range of materials commonly encountered in industrial fabrication. It performs exceptionally well on stainless steel, providing the clean, corrosion-resistant welds required for food processing, chemical, and medical applications. It handles low-carbon and alloy steels with strong penetration and consistent bead profiles, and it is also capable of welding aluminum alloys when proper AC capability is utilized. This broad material compatibility allows fabrication shops to take on a wide variety of work without investing in multiple specialized welding machines.

Designed for Industrial Longevity

The WS-315 is built to withstand the demands of continuous industrial use. The efficient cooling system maintains optimal operating temperatures even during long welding sessions, while the rugged construction protects internal components from the dust, debris, and occasional impacts common in fabrication environments. The machine's modular design facilitates maintenance and service, reducing downtime when component replacement is necessary. These durability features make the WS-315 a long-term investment that will provide years of reliable service.

Powerful Yet Compact

Despite its 315-amp output capacity, the WS-315 maintains a compact footprint that conserves valuable floor space in the workshop. The inverter design significantly reduces weight compared to traditional machines, making it practical to move the unit between workstations when needed. This combination of power and portability offers flexibility that is particularly valuable in shops where layout changes are common or where space is at a premium.

The WS-315 delivers the precision, reliability, and versatility that industrial fabricators need to maintain competitive advantage. Its advanced inverter technology, comprehensive safety features, and professional welding performance make it a trusted solution for demanding industrial applications.

Technical Parameters of WS-315 Inverter TIG Arc Welder

Rated Input Voltage:AC380V ±15%

Rated Input Capacity (TIG / MMA):10.7 kVA / 12.8 kVA

Rated Input Current (TIG / MMA):16.2 A / 19.5 A

No-load Voltage:60 V

Output Current Adjustment Range (TIG / MMA):20 – 240 A / 20 – 220 A

Duty Cycle:60%

Enclosure Protection Rating:IP21S

Efficiency:77.3%

Insulation Class:F

Overall Dimension (L×W×H):470 × 220 × 360 mm

Weight:11.6 kg