Open Arc Orbital Weld Heads
Orbital Service Open Weld Heads are designed to deliver flexible, high-quality orbital TIG welding across a wide range of pipe and tube applications. Available in multiple model sizes covering pipe outside diameters from 8mm to 273mm (0.31″ to 10.75″), the Open Weld Head series provides application-specific solutions for everything from small-diameter tubing to larger industrial piping systems.
The open head design makes these orbital weld heads ideal for applications involving pipe-to-pipe joints, fittings, elbows, flanges, and other welding jobs where enclosed weld heads may not be practical. Select models are also available with AVC (Arc Voltage Control) and oscillation options, providing enhanced weld process control for more demanding applications and helping maintain consistent, high-quality results in critical orbital welding environments.
Flexible Open Weld Head Configurations for Demanding Orbital TIG Welding Applications
The Orbital Service Open Weld Head (OWH) series is designed to support flexible orbital TIG welding configurations across a range of industrial welding applications. Built with a precision regulated motor and gear system, these open weld heads deliver smooth and controlled operation, while helping the operator maintain consistent weld performance throughout the welding process.
Orbital Service’s multiple configuration options allow the system to be adapted to specific process requirements, such as mounting possibilities for cold wire holders and compatibility with gas or water-cooled TIG torch packages. This modular approach allows operators greater flexibility to configure the weld head based on material type, weld procedure, cooling requirements and production demands.
Key Features
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Open head design – Enables welding on pipe-to-pipe joints, fittings, elbows, and flanges
- Five model sizes – Covers pipe OD from 8 mm to 273 mm for application-specific selection
- AVC & oscillation options – Available on larger models for enhanced arc stability and control
- Regulated motor and gear system – Delivers smooth, consistent orbital rotation
- Cold wire compatibility – Supports cold wire holder integration where required
- Flexible torch configurations – Compatible with gas or water-cooled TIG torch systems
- Modular system design – Allows adaptation to different welding procedures and environments
- Industrial build quality – Designed for reliable use in shop and field conditions
Versatility in Demanding Orbital Welding Applications
Open weld heads are designed to deliver stable and controlled rotation during orbital welding operations, helping operators maintain consistent weld quality across a range of pipe and tube positions. The open design allows direct access to the weld joint, supporting efficient setup and alignment in situations where closed weld head systems are not practical.
The regulated drive system ensures smooth rotation and consistent motion throughout the weld cycle, enabling repeatable results in production and field environments. This controlled movement is critical for maintaining uniform weld characteristics across varying joint conditions and materials.
Open Weld Head Model Comparison and Technical Specifications
OWH Open Welding Head Models
| Model | Pipe OD Range | Clamp Insert Range | Weight (Standard / AVC-OSC) | AVC/OSC Available | Article Number |
|---|---|---|---|---|---|
| OWH 40 | 8–40 mm (0.31″–1.57″) | 10–40 mm (0.39″–1.57″) | 1.7 kg | No | OWH40100 |
| OWH 76 | 10–80 mm (0.39″–3.15″) | 10–40 mm (0.39″–1.57″) | 2.5 / 4.6 kg | Yes | OWH76100 |
| OWH 114 | 15–115 mm (0.59″–4.53″) | 20–50 mm (0.79″–1.97″) | 3.8 / 5.75 kg | Yes | OWH114100 |
| OWH 168 | 25–170 mm (0.98″–6.69″) | 25–80 mm (0.98″–3.15″) | 6.8 / 9.0 kg | Yes | OWH168100 |
| OWH 273 | 101–273 mm (3.98″–10.75″) | 101–170 mm (3.98″–6.69″) | 14.2 / 16.9 kg | Yes | OWH273100 |
Frequently Asked Questions
What are Orbital Service Open Arc Weld Heads used for?
Orbital Service Open Weld Heads (OWH) are designed for flexible, high-quality orbital TIG welding on pipe-to-pipe joints, fittings, elbows, flanges, and other configurations where closed weld heads are not practical. They cover pipe OD from 8 mm to 273 mm.
What pipe sizes do the OWH series support?
The OWH series includes five models covering pipe outside diameters from 8 mm to 273 mm (0.31″ to 10.75″), allowing you to select the right head for your specific application.
What is the difference between standard and AVC/OSC models?
AVC (Arc Voltage Control) and OSC (Oscillation) options are available on larger models (OWH 76 and above). These features provide automatic arc length control and torch oscillation for improved weld quality on thicker materials or more demanding applications.
Are the Open Weld Heads compatible with cold wire feeding?
Yes. Most models support cold wire holder integration, giving you greater flexibility for filler material addition during the orbital welding process.
Can these heads be used with gas or water-cooled torches?
Yes. The OWH series is compatible with both gas-cooled and water-cooled TIG torch packages, allowing you to match the setup to your power source and application requirements.
What makes the open head design advantageous?
The open head design provides easy access to the weld joint, faster setup, and better visibility. It is ideal for applications involving elbows, flanges, and other complex geometries where closed heads cannot be used.
