Pipeline Welding & Cutting Full-Process Solutions

Typical Condition:

Ø1219mm × 26.2mm X80 grade pipeline girth welding in outdoor environments ranging from -25°C to 50°C.

● Required weld penetration ≥90% of wall thickness (15–30mm)

● Weld toughness ≥80J at -20°C

Industry Pain Points:

● Manual welding causes heat input fluctuations, resulting in CTOD values <0.15mm — insufficient for harsh environment projects

● Rework rates with traditional methods exceed 12%, driving weld costs above $28,000 per kilometer

AUTO MIG 500 (Primary Automated Option)

Cooling: Water Cooled

Duty Cycle: 100% — 500A (CO₂), 450A (Mixed Gas)

Wire Size: Φ0.8-1.6mm

MIG 24 (Manual Backup for Special Conditions)

Cooling: Gas Cooled

Duty Cycle: 60% — 250A (CO₂), 220A (Mixed Gas)

Wire Size: Φ0.8–1.2 mm

Typical Condition:

Welding branch connections on Ø406mm in-service crude oil pipelines operating at 6.9 MPa.

Industry Pain Points:

● Flowing media inside the pipeline causes uneven heat dissipation, requiring strict heat input control to avoid burn-through.

● Weld seams must pass 100% radiographic testing (RT) with zero lack-of-fusion defects.

AUTO MIG 25 (Primary Option for Automated Welding)

Cooling: Gas Cooled

Duty Cycle: 60% — 230A (CO₂), 200A (Mixed Gas)

Wire Size: Φ0.8–1.2 mm

MIG 15 (Handheld Emergency Repair Tool, ideal for pipes <200mm)

Cooling: Gas Cooled

Duty Cycle: 60% — 180A (CO₂), 150A (Mixed Gas)

Wire Size: Φ0.6–1.0 mm

Typical Condition:

Bevel preparation for 37.5° V-grooves on X70-grade pipelines with 22mm wall thickness

Industry Pain Points:

● Manual cutting causes groove angle deviations >3°, increasing weld stress concentration factors to 2.8

● Traditional flame cutting produces a heat-affected zone (HAZ) >5mm, increasing hydrogen-induced cracking risk

Output: 200A with High-Frequency Ignition

Duty Cycle: 60%

Gas Pressure: 3.0 Bar

Gas Flow: 44–48 L/min

Water Cooling: 1.4 L/min

Post-Flow: 60s