Built for pipeline and heavy-duty workshop use, the Zhongliang WS-250 series is an industrial-grade DC TIG & MMA (Stick) dual-process welder. Its water-cooled torch design supports long weld runs with stable arc performance and reduced torch temperature—ideal for carbon steel and stainless-steel fabrication where consistency matters.
 
Key Features
Dual Process: DC TIG for clean, precise beads; MMA for on-site versatility.
Industrial Power: 380V input for stable output in factory settings.
High Output Options: Choose 315A or 400A to match pipeline and thick-section jobs.
Water-Cooled System: Extends duty capability and operator comfort on long passes.
Tough Build: Heavy-duty chassis and internal protections (over-temp / over-current).
Pipeline-Ready: Smooth arc start and stable puddle control for root to cap passes.
Typical Applications
Oil & gas pipeline fabrication and maintenance
Stainless process lines, tanks, and pressure components
Heavy equipment repair, structural steel, and shop fabrication
Technical Specifications
Model: WS-250 (Dual-Use TIG/MMA)
Input Voltage: 380V AC (industrial supply)
Processes: DC TIG / MMA (Stick)
Rated Output: 315A or 400A (model option)
Cooling: Water-cooled TIG torch system
Shielding Gas (TIG): Argon ≥99.99%
Weldable Materials (DC TIG): Carbon steel, stainless steel, copper, titanium alloys*
Protection Functions: Over-temperature, over-current
*Note: DC TIG is not suitable for aluminum/magnesium (AC TIG required).
 
What’s in the Standard Package (WS-250 Dual-Use)
Power source (WS-250)
Water-cooled TIG torch assembly
MMA electrode holder & cable
Work clamp & cable
Gas hose / basic regulator
User manual
(Exact contents may vary by configuration—confirm before ordering.)
 
Ordering & Options
Current Class: 315A or 400A
Plug & Leads: Configurable to site requirements
Accessories: Torches, consumables, regulators, and water coolers available
Important Notes
Requires 380V industrial power; verify site compatibility.
For aluminum welding, select an AC/DC TIG model.
We can provide consumables, spare parts, and after-sales support on request.
 
Looking for a quotation or a package tailored to your job? Share your material thickness, duty expectations (run time), and preferred current class (315A or 400A), and we’ll recommend an optimized setup.