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The STR Series Welding Machines are designed for efficient and precise welding, equipped with dual-circuit refrigerant direct cooling and customizable welding modes. These machines are suitable for a variety of wire diameters and are ideal for spot, continuous, and pulse welding. They offer reliable performance across different applications, making them a great choice for industrial use.
Product Specifications:
| Project | Unit | STR-HW350 | STR-HW450 | STR-HW550 |
|---|---|---|---|---|
| Rated Input Power Supply | - | Single phase 220V | Single phase 220V | Single phase 220V |
| Input Power Frequency | Hz | 50/60 | 50/60 | 50/60 |
| Rated Input Power | W | 3800 | 4200 | 5400 |
| Welding Speed | cm/min | 20~80 | 20~80 | 20~80 |
| Cooling Mode | - | Dual-Circuit Refrigerant Direct Cooling | Dual-Circuit Refrigerant Direct Cooling | Dual-Circuit Refrigerant Direct Cooling |
| Working Temperature | ℃ | -20~60 | -20~60 | -20~60 |
| Working Humidity | % | -30~70 | -30~70 | -30~70 |
| Product Dimensions | mm | 673×480×310 | 673×505×310 | 673×505×310 |
| Product Weight | kg | 43 | 43 | 45 |
| Applicable Wire Diameter | mm | 0.8/1/1.2/1.4/1.6 | 0.8/1/1.2/1.4/1.6 | 0.8/1/1.2/1.4/1.6 |
| Number of Preset Process Packages | unit | 24 | 30 | 40 |
| Number of Customizable Process Packages | unit | 20 | 20 | 20 |
| Output Mode | - | Integrated armored cable + welding gun | Integrated armored cable + welding gun | Integrated armored cable + welding gun |
| Welding Mode | - | Spot welding/continuous spot welding/pulse welding/continuous welding | Spot welding/continuous spot welding/pulse welding/continuous welding | Spot welding/continuous spot welding/pulse welding/continuous welding |


The machine requires a single-phase 220V power supply.
The machine offers spot welding, continuous spot welding, pulse welding, and continuous welding modes.
The maximum welding speed for all models is 20 to 80 cm/min.
The machines are equipped with a dual-circuit refrigerant direct cooling system for efficient temperature management.
The working temperature range is from -20°C to 60°C.
The STR-HW450 model weighs 43 kg.
Yes, the machine allows for customizable process packages, with 20 preset process packages available.
The machine is compatible with wire diameters of 0.8, 1.0, 1.2, 1.4, and 1.6 mm.
The dimensions of the STR-HW350 model are 673 mm × 480 mm × 310 mm.
The input power frequency is 50/60 Hz.
The STR Series offers 20 customizable process packages.
Yes, the STR Series Welding Machines are designed for reliable performance and are ideal for various industrial applications.
The machine can operate in humidity levels ranging from 30% to 70%.
The output mode includes an integrated armored cable and welding gun.
The rated input power for the STR-HW550 model is 5400 W.
No approved technical specifications are available yet. Please refer to the product description or contact our team.
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