
Weld Heads
For tube and pipe orbital welding applications
The TPWH-C series is designed to perform orbital TOG welds on tube and thin wall pipe without the need for wire feeding. The sealed cavity is filled with protective gas prior to and during the welding process. This weld head is very efficient and has a water cooled system. Various collet sizes are available, offering accurate positioning without tacking.
Call us at 916-573-7800 for a rental quote.

TPWH-C Series Closed Weld Heads
We sell and rent the Otto Arc TPWH-C series weld heads in many sizes:
- TPWH-C-1 for up to 1” tube
- TPWH-C-1.5 for up to 1.5” tube
- TPWH-C-2 for up to 2” tube
- TPWH-C-3 for up to 3” tube
- TPWH-C-4 for up to 4” tube
- TPWH-C-5 for up to 5” tube
These affordable weld heads get the job done for a fraction of the price of the other bands.
Model Specifications
| Model | Diameter Range mm (inches) | A | B | C | D |
|---|---|---|---|---|---|
| TC-500 | 6-12.7mm (¼” - ½”) | 65mm (2.6”) | 24mm (1”) | 12.5mm (0.5”) | 314mm (12.4”) |
| TPWH-C-1 | 6-25.4mm (¼” - 1”) | 80mm (3.2”) | 40mm (1.6”) | 40mm (1.6”) | 340mm (13.4”) |
| TPWH-C-2 | 12.7-50.8mm (½” - 2”) | 136mm (5.3”) | 65mm (2.6”) | 38mm (1.5”) | 426mm (16.77”) |
| TPWH-C-3 | 12.7-76.2mm (¾” - 3”) | 145mm (5.7”) | 72mm (2.9”) | 42mm (1.6”) | 412mm (16.2”) |
| TPWH-C-4 | 38.1-101.6mm (1 ½” - 4”) | 195mm (7.7”) | 97mm (3.8”) | 57mm (2.3”) | 497mm (19.6”) |
| TPWH-C-6 | 50.8-168.3mm (2” - 6 ⅝”) | 295mm (11.6”) | 150mm (5.9”) | 61mm (2.4”) | 630mm (24.8”) |
Performance
- TIG autogenous (fusion) welding without filler material
- Precision design for accurate tube positioning
- Tube clamping collets manufactured from 17-4 SS for repeatability
- Closed chamber for better gas coverage and cleaner welds
- Compact design for small work areas
- Commonly used for stainless steel, nickel alloys, and titanium
- Water cooled head for high production and larger wall thickness
- The tool of choice for medical, food, biological, electric, instrument and pipe installation industries
- Recommended Power Unit - OW-ARC 180
Closed Weld Head Inserts
- Weld Head Collets for TPWH-C Series
- Tungsten tips recommended for tungsten geometry
For TPWH-C Series Weld Head Inserts and Tungsten Tips, please call or visit ottoarc.com