Orbital Welding

HotPulse technology delivers consistent results with enhanced safety

WSI is the largest provider of machine orbital welding services for refineries, nuclear, and fossil plants. Our revolutionary HotPulse^®-enabled orbital welding equipment provides better mechanical properties and volumetric quality than conventional field welding processes, with deposition rates competitive with SMAW and FCAW.

Our proprietary technology exceeds quality and schedule expectations while being completed safely. It lowers the risks commonly associated with access constraints and high pre-heat temperatures coupled with machine control. More plant operators turn to WSI for machine orbital pipe welding services during planned or emergent outages.

Superior orbital weld quality, increased production rates, and reduced risk of failure

HotPulse orbital welding technology, or HP GTAW™ welding, combines unmatched deposition rates with superior arc control. This automated hot pulse orbital welding method delivers excellent weld quality, increased production rates, and reduced failure risks:

• First-time quality welds
• Up to 6x higher deposition rate than cold wire TIG
• Reduced surface tension for better wetting and bead profile
• Reduced porosity from puddle agitation
• Grain refinement for better weld metal impact properties
• Welds with high-alloy or nickel materials
• Semi-automatic and machine-operated versions provide application flexibility
• Improved appearance and fit-up tolerance

Enhances the speed, quality, and productivity of orbital pipe and tube welding projects

In an environment with short schedules, tight budgets, and high-quality specifications, there is little tolerance for welding defects and low productivity. Current high-energy systems require heavy wall and higher alloy materials for process reliability, making conventional techniques less viable. WSI’s HP GTAW welding technology significantly enhances the speed, quality, and productivity of orbital pipe and tube welding projects.

HotPulse GTAW Proven Applications

Our innovative orbital welding technology offers advanced solutions for high-quality joints and a wide range of proven applications, ensuring unmatched performance and reliability in industrial settings.

• Thick wall pressure vessel repairs
• P91 high-energy lines in coal-fired boilers
• Head replacement on hydrogen reactors in refineries
• Heavy wall piping systems in combined-cycle power plants
• Seam weld repair on heavy wall vessels at chemical plants
• Furnace U-Bend replacements

By leveraging our advanced automated orbital welding techniques, WSI ensures superior tube welding and tube replacement solutions that meet the highest industry standards for quality and reliability.