Pipeline Welding & Cutting Full-Process Solutions
Overcoming Core Challenges in Transmission Line Construction
Targeting three critical operations in pipeline construction — circumferential seam welding for high-strength pipelines, hot tapping under pressure, and precision bevel cutting — we offer a dual-standard process system certified to both API and ASME. Our solutions deliver a 25% increase in welding efficiency and cutting accuracy within ±0.3 mm, setting a new performance benchmark for the industry.
01｜Fully Automated Circumferential Seam Welding System
Application Scenario & Technical Bottlenecks
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
Recommended Solution
AUTO MIG 501D (Primary Automated Option)
Cooling: Water Cooled
Duty Cycle: 100% — 500A (CO₂), 450A (Mixed Gas)
Wire Size: 0.8–1.6 mm
MIG 24 (Manual Backup for Special Conditions)
Cooling: Gas Cooled
Duty Cycle: 60% — 250A (CO₂), 220A (Mixed Gas)
Wire Size: 0.8–1.2 mm
02｜Hot Tapping Welding System
Application Scenario & Technical Bottlenecks
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
Recommended Solution
AUTO MIG 25 (Primary Option for Automated Welding)
Cooling: Gas Cooled
Duty Cycle: 60% — 230A (CO₂), 200A (Mixed Gas)
Wire Size: 0.8–1.2 mm
MIG 15 (Handheld Emergency Repair Tool, ideal for pipes <200mm)
Cooling: Gas Cooled
Duty Cycle: 60% — 180A (CO₂), 150A (Mixed Gas)
Wire Size: 0.6–1.0 mm
03｜Intelligent Pipe Cutting System
Application Scenario & Technical Bottlenecks
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
Recommended Solution
PLASMA CB200 (Automated Plasma Cutting System)
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
Conclusion｜Smarter Welding & Cutting for High-Performance Pipelines
From cross-country energy transport lines to urban distribution networks, our pipeline welding and cutting solutions offer robust performance under pressure. Whether you need to weld massive X80 pipes in the Arctic cold or cut perfect bevels for high-strength joints, we help you meet the toughest standards — with speed, safety, and precision.
For product brochures, demos, or technical consultations, feel free to contact us. We’re here to power your pipeline projects.
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