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Pipeline Welding Machine
Created with Pixso. H400 400A Diesel Engine Dual-Operator Welding Generator for Oil & Gas Pipeline Welding
Detail Information
Place of Origin:
Chongqing,China
Certification:
CE
Rated Duty Cycle:
60%/400A/40V
Rated Power Output:
AC400V/16Kw/Tri-phase, AC230V/6.9Kw/Single Phase
Engine Brand & Type:
Kubota/Yuchai/Weichai
Prime Power/Speed:
19Kw/3000rpm(Kubota), 23Kw/1500rpm(Yuchai,Weichai)
Fuel:
Diesel
Start Method:
Electric Start
Net Weight:
520Kg(Kubota), 640Kg(Yuchai/Weichai)
Packing Size:
1580*900*1200mm
Application:
OIl&Gas Pipeline Welding, Steel Structure Processing,
Packaging Details:
Wooden case, 1700*900*1200mm, 14 sets/20GP
Supply Ability:
100 sets per month
Highlight:

mma arc welding machine

,

multi process welder generator

Product Description
H400 400A Dual Welding Generator - Professional Oil & Gas Pipeline Welder
400A Diesel Engine-driven Multi-Process Welder With Dual-Operator Capabilities and Powerful Auxiliary Output
Key Features
  • Simultaneous 50/60Hz single/tri-phase power output during welding operations
  • Premium diesel engine with strong power, stable operation, low noise and fuel consumption
  • Integrated multi-process capabilities: MMA, Cellulose, TIG, Gouging, FCAW and more
  • Wide current regulating range supporting carbon arc gouging with 8mm+ carbon rods
  • Single/double operation modes with non-interfering dual welding capability
  • Welding current/voltage parameter preset function for easy regulation
  • Fast dynamic response and excellent welding performance
  • Powerful AC auxiliary output for driving tools and lighting equipment
  • Integrated monitoring displays for water temperature, oil pressure and fuel volume
  • One-side integrated maintenance design for easy service access
  • Comprehensive safety alarms and protection functions
  • Forklift holes and lifting rings for easy transport and handling
Technical Specifications
Dual Welding Output (A & B)
Handle A Handle B
Welding Processes Stick TIG Stick TIG FCAW
No-load Voltage 75V 75V 75V 75V -
Current Range 30-200A 14-40V 30-200A 14-40V -
Welding Current 155A200A 155A200A 155A200A 155A200A 155A200A
Welding Voltage 26.2V28V 16.2V18V 26.2V28V 16.2V18V 21.8V24V
Duty Cycle 100%60% 100%60% 100%60% 100%60% 100%60%
External Characteristic Drop Flat Drop Flat -
Single Welding Output (A or B)
Handle A Handle B
Welding Processes Stick TIG Stick TIG FCAW
No-load Voltage 75V 75V 75V 75V -
Current Range 30-200A 30-400A 14-40V 30-400A 14-40V
Welding Current 155A200A 310A400A 155A200A 310A400A 310A400A
Welding Voltage 26.2V28V 32.4V36V 16.2V18V 22.4V26V 29.5V34V
Duty Cycle 100%60% 100%60% 100%60% 100%60% 100%60%
External Characteristic Drop Flat Drop Flat -
Generator Output
Rated Power 16Kw (Max. 17.6Kw)
Excitation Type AVR Brushless Excitation
Frequency 50Hz
Phase Tri-phase | Single Phase
Output Voltage/Power AC400V/16Kw | AC230V/6.9Kw
Engine Options
Model Xichai 4DW91-29D Yuchai 4D24G Kubota V1305 (Japan)
Fuel Diesel
Rated Power 21Kw (Max. 23Kw) 23Kw (Max. 25.2Kw) 19Kw (Max. 21Kw)
Rated Speed 1500r/min 3000r/min 3000r/min
Warning Type Water Temperature / Oil Pressure / Battery Charge
Fuel Capacity 50L
Cooling Method Water-cooled
Fuel Consumption 5.0L/hr 4.3L/hr 4.3L/hr
Complete Appliance
Weight 680Kg | 560Kg
Dimension 1480*800*999 mm
Protection Class IP23
Product Images
Overall Rating
4.5
★★★★★
★★★★★
Based on 50 reviews recently
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All Reviews
  • G
    G*e
    Brazil Nov 2.2025
    ★★★★★
    ★★★★★
    This welding machine is truly excellent! The 4-cylinder engine provides ample power, it doesn't overheat during continuous operation, the dual-drive wire feeding is incredibly stable, and the welds are smooth. The built-in generator is super convenient for outdoor work, and the 100L fuel tank provides impressive endurance, significantly improving construction efficiency.
  • G
    GENWELD LWG600A Pipeline Welding Machine with 4-Cylinder Air-Cooled Engine and AC230V/4Kw Generator Output for Robust Performance
    Costa Rica Aug 20.2025
    ★★★★★
    ★★★★★
    Operation is very simple; the digital control system is easy to learn, even for beginners. The arc is stable during welding, with minimal spatter, saving time on cleaning. The machine is compact and easy to transport, and it hasn't had any problems in two months of use – very reliable!