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Pipeline automatic welding machine series
Engine welder · Automatic welding at all positions · Pipe diameter Φ219-Φ1422mm
Overview of products
The engine welder pipeline automatic welding machine series covers the two major process routes of internal welding and external welding. It includes four core products: flexible internal welding machine, lithium battery internal welding machine, single gun external welding machine, and double gun external welding machine. It is specially designed for large-diameter long-distance pipeline engineering and supports Φ219mm to Φ1422mm full-diameter pipe coverage. It is suitable for various pipeline construction scenarios such as oil and gas long-distance transportation, urban gas, and water supply pipeline network.
Comparison of all products
| Model | &Genre | Applicable pipe diameter | Welding unit | Core Features |
|---|---|---|---|---|
| DW48/56-8H-D | Flexible inner welder | Φ1219-Φ1422mm | 8 welding units | Large torque servo drive, climbing ≤ 30°, root welding ≤ 120s |
| DW-EH48/56 | lithium batteryinternal welder | Φ1219-Φ1422mm | 8 welding units | Lithium battery drive, get rid of cables, no electricity in the field, root welding ≤ 90s |
| DW-EW-I | Single gun external welding machine | Φ219-Φ1422mm | Single welding torch | Toothed steel rail, lightweight trolley, adaptive parameter adjustment |
| DW-EW-II | Dual Gun External Welder | Φ219-Φ1422mm | Double welding torch | Straight pendulum/angular pendulum dual mode, automatic arc tracking, double efficiency |
internal welderseries
DW48/56-8H-D Flexible Internal Welder
Applicable pipe diameter:Φ1219-Φ1422mm
Welding unit:8 large torque servo drives
Gradeability≤ 30° · Complex working conditions in mountainous hills
Weld Time:Root welding ≤ 120s · Full position automatic welding
Altitude adaptation:0-3500m · Operating temperature -50°C-65°C
DW-EH48/56 Lithium Internal Welder
Applicable pipe diameter:Φ1219-Φ1422mm
Dynamic form:Lithium Drive · Electric + Hydraulic
Welding unit:8 · Outdoor no electricity scenarios
Weld Time:Root welding ≤ 90s · Rapid emergency response
Altitude adaptation:≤4,000m · Operating temp. -40°C to 65°C
external welderseries
DW-EW-I Single-Torch External Welder
Applicable pipe diameter:Φ219-Φ1422mm (full coverage)
track systemToothed steel rail with strong stiffness and easy assembly and disassembly
Transmission modeSingle gear rack, high transmission accuracy, no loss of rotation
PARAMETERS MODULATIONWelding parameters change automatically with position, no manual intervention required
Typical Applications：Prefab and on-site construction dual scenarios
DW-EW-II Dual-Torch External Welder
Applicable pipe diameter:Φ219-Φ1422mm (full coverage)
Welding torch configuration:Dual welding torch, supports straight/angular pendulum dual mode
Arc tracking:Real-time weld tracking, automatic deviation correction
MethodsIntegrated digital control, man-machine interface adjustment
Key Advantages：Double welding efficiency for high-grade long-distance pipelines
Selection consultation
Engine welder offers customized selection solutions based on your pipe diameter, wall thickness, construction environment and other parameters
📞 010-86468776 | 📱 13521628344 | 📧 denoh@126.com | Get Selection →