HZG-76 Automatic Pipe Orbital Welding Torch

The HZG-76 is an all-position tube-to-tubesheet automatic orbital welding torch designed for medium and thick-wall carbon steel and stainless steel pipes from 19mm to 76mm. The pipe stays stationary while the torch rotates, so it is widely applied to on-site installation of pipe-to-pipe and pipe-to-elbow joints.

Why Choose the HZG-76 Orbital Welding Torch

• Three core modules - rotation system, clamp device and transmission system make up a compact, stable welding head.
• Light aluminium alloy body with caliper clamp - stepless adjustment adapts to different pipe diameters.
• Backlash-free gear transmission - stable rotation and low moment of inertia, no jamming even under high-temperature conditions.
• Electric weaving and arc length oscillation - meets multi-pass welding process requirements, with AVC auto arc length tracking and OSC capping.
• Circulating water cooled torch - supports long-time continuous operation; works for both autogenous welding and wire feeding welding.

Welding Head Parameters (HZG-76)

Wire Feeder Parameters

Welding Performance Characteristics

• Carbon steel with a thickness greater than 2.5 mm welded with a V-groove: single-side groove angle ≥ 37°, misalignment less than 10% of wall thickness.
• Stainless steel with a thickness greater than 2.5 mm welded with a V-groove: single-side groove angle ≥ 45°, misalignment less than 10% of wall thickness.
• Fit-up clearance: 0-0.5 mm.
• Tack welds made in small, thin and dense spots.
• Welding mode: the pipe remains stationary while the welding torch rotates to complete welding.
• For multi-pass welding with grooved joints, AVC automatically tracks the arc length; the capping pass is completed by OSC weaving oscillation.

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