The OTC DAIHEN DT315P is an extremely classic industrial-grade fully digital DC Pulse TIG Welding Machine (DC TIG). Thanks to its precise low-frequency and mid-frequency pulse arc control, it excels in the distortion-free welding of stainless steel thin plates, high-quality single-sided welding with double-sided formation (root pass) for pressure piping, and the precision fabrication of carbon steel/copper alloys. To adapt to varying workshop intensities, the manufacturer has planned two standard factory kits for the DT315P: Air-Cooled and Water-Cooled. This article will provide a detailed breakdown of the components in these two configurations, helping enterprises accurately verify their purchases during equipment acceptance.
1. Welding Expert Guide: DT315P DC Welder Process Positioning & Air/Water Cooling Selection
When purchasing a TIG welding machine, clearly understanding the materials to be processed and the operational intensity is key to a successful selection:
- Material Applicability Reminder: The DT315P is a pure DC TIG welder and cannot break the oxide film on the surface of aluminum; therefore, it does not support the welding of aluminum and magnesium alloys (if you need to weld aluminum, please choose the DA300P AC/DC model). It is a professional-grade processing weapon for high-precision stainless steel, carbon steel, titanium, and copper.
- Air-Cooled Configuration (with AWD-26 Torch): Suitable for light-duty, short-seam, and thin plates. If the workshop mainly processes thin-walled stainless steel products, kitchenware hardware, or performs short-duration tack welding where the current generally remains below 200A, the air-cooled system will suffice. Its advantages lie in not requiring a water connection, flexible mobility, and zero maintenance costs later on.
- Water-Cooled Configuration (with AWD-18 Torch): Built for high-current, thick-plate continuous welding. In scenarios like chemical plant pipe prefabrication and heavy pressure vessel root passes that require continuous arcing and prolonged high-load operation, the water-cooling system forcefully removes the extreme heat from the torch head. This effectively avoids issues such as the melting of the collet/contact tip, cracking of the ceramic nozzle, and the welder’s handle becoming too hot to hold.
2. OTC DAIHEN DT315P Air-Cooled Standard Factory Configuration List
This basic kit comes standard with the OTC original high-power AWD-26 air-cooled TIG torch (4-meter cable length). It features an extremely simple structure and is plug-and-play.
| NO. | Core Component Name | Original Model/Spec | Std Qty |
|---|---|---|---|
| 1 | DC Pulse TIG Welding Power Source | DT-315P | 1 Unit |
| 2 | Air-Cooled TIG Torch (4m) | AWD-26(4M) | 1 PC |
| 3 | Precision Argon Gas Flow Meter | W-25FL-Ar | 1 Set |
| 4 | Secondary Welding Ground Cable | BKPDT-3803 | 1 PC |
| 5 | Gas Inlet Hose | BKGFF-0603 | 1 PC |
3. OTC DAIHEN DT315P Water-Cooled Standard Factory Configuration List
The water-cooled kit comprehensively upgrades the torch to the AWD-18 heavy-duty torch with built-in internal water-circulation cooling channels, and includes an additional original industrial-grade pressure-resistant water hose assembly.
| NO. | Core Component Name | Original Model/Spec | Std Qty |
|---|---|---|---|
| 1 | DC Pulse TIG Welding Power Source | DT-315P | 1 Unit |
| 2 | Water-Cooled TIG Torch (4m) | AWD-18(4M) | 1 PC |
| 3 | Precision Argon Gas Flow Meter | W-25FL-Ar | 1 Set |
| 4 | Secondary Welding Ground Cable | BKPDT-3803 | 1 PC |
| 5 | Gas Inlet Hose | BKGFF-0603 | 1 PC |
| 6 | Dedicated Circulating Water Hose | BBDW-3001 | 1 Set |
⚠️ Expert Special Reminder: When purchasing this water-cooling system, you must pair the unit with a professional “industrial closed-loop circulating water tank”. It is strictly prohibited to connect directly to tap water for direct discharge, as scale can block the torch cooling channels, leading to equipment damage.