GG Series Friction Stir Welder

MTI’s GG Series is the most versatile heavy‑section Friction Stir Welding system on the market, engineered to tackle the largest and most complex solid‑state welding challenges. Built around a rigid gantry architecture, the GG Series integrates a 5‑axis gimbaled weld head, a single solid table, or an optional extendable rail system machine base, and an optional high‑capacity rotary turntable, enabling true 3‑dimensional welding of oversized components with exceptional accuracy. Powered by the market‑leading Stirtec STIRlytics® control system, the GG Series delivers precise force and position control across long weld paths, varied joint geometries, and demanding material combinations. 

Designed for industries that rely on large, structural assemblies – such as railcars, aerospace, defense, marine, and energy – the GG Series provides unmatched capability for joining thick‑section aluminum, steel, and other materials that conventional FSW systems simply cannot accommodate. Its scalable configuration supports massive part envelopes, complex contours, and multi‑surface welds, making it the preferred platform for critical structures like wing panels, ship propellers, railcar bodies, defense components and other high‑integrity welded assemblies. With its combination of strength, flexibility, and advanced process control, MTI’s GG Series ensures repeatable, distortion‑minimized welds on the world’s most demanding large‑scale projects. 

All MTI FSW machines come standard with Stirtec’s STIRlytics® control platform, which combines closed‑loop force and position control with real‑time process monitoring to ensure ISO 25239‑compliant weld quality at high production speeds. Built on SIEMENS Sinumerik ONE CNC and S7 PLC hardware, STIRlytics® captures full weld‑traceability data, supports remote diagnostics and updates, and provides Industry 4.0‑ready connectivity. This advanced digital control system minimizes downtime, strengthens process repeatability, and delivers the high level of consistency manufacturers expect from MTI’s FSW solutions. Together with Stirtec, MTI also provides customer-specific fixturing and pin tool design and manufacturing to drive superior process capability and weld quality for your application.