HUAHENG TOA77 Medium Thick Wall Pipe Welding Machine for Pipe to Pipe Welding 19mm 45mm
Open-Head Orbital Welding System
TOA77 Medium-Thick-Wall Pipeline Welding Equipment
Breaking away from traditional enclosed designs, the HUAHENG TOA series features an innovative open-head structure. This breakthrough design enables precise process control while significantly improving operational visibility. Built for medium-thick-wall pipelines, it executes smooth horizontal circumferential welds and navigates complex vertical pipe joints with ease. Its lightweight welding head maintains perfect surface contact throughout operation, ensuring reliable, high-precision welding even in the most challenging industrial environments.
Suitable for fusion welding or wire-fed welding with the integrated TB1501 wire feeder (AVC & oscillation).
Technical Parameters
| Parameter | TOA77 | TOA130 | TOA180 | TOA230 | TOA320 |
|---|---|---|---|---|---|
| Weldable Pipe Diameter | |||||
| Inner clamp | Φ19.05 – Φ45 (3/4″ – 1 3/4″) | Φ38.1 – Φ76 (1 1/2″ – 3″) | Φ50.8 – Φ114.3 (2″ – 4 1/2″) | Φ120 – Φ178 (4 1/2″ – 7″) | Φ150 – Φ230 (6″ – 9″) |
| Outer clamp | Φ45 – Φ77 (1 3/4″ – 3″) | Φ76 – Φ130 (3″ – 5″) | Φ114.3 – Φ180 (4 1/2″ – 7″) | Φ178 – Φ230 (7″ – 9″) | Φ230 – Φ324 (9″ – 12 3/4″) |
| Tungsten electrode diameter (mm) | Φ2.4, Φ3.2 | Φ2.4, Φ3.2 | Φ2.4, Φ3.2 | Φ2.4, Φ3.2 | Φ2.4, Φ3.2 |
| Spinning speed (rpm) | 0.19 – 3.8 | 0.11 – 2.2 | 0.09 – 1.8 | 0.05 – 1.0 | 0.026 – 0.52 |
| Yaw width (mm) | 20 | 40 | 40 | 40 | 40 |
| Arc length height (mm) | 40 | 40 | 40 | 40 | 40 |
| Max. wire feed speed (mm/min) | 1800 | 1800 | 1800 | 1800 | 1800 |
| Main Dimensions (mm) | TOA77 | TOA130 | TOA180 | TOA230 | TOA320 |
|---|---|---|---|---|---|
| A | 220 | 300 | 375 | 425 | 550 |
| B | 180 | 235 | 285 | 300 | 315 |
| C | 112 – 132 | 156 – 196 | 184 – 224 | 195 – 235 | 230 – 270 |
| D | 92 | 165 | 225 | 250 | 297 |
| E | 82 | 132 | 182 | 232 | 328 |
| F | 320 | 400 | 525 | 570 | 680 |
| Weight (kg) | 5.5 (without cable) | 10.8 (without cable) | 19.5 (without cable) | 21.5 (without cable) | 36 (without cable) |
| Dimensions (mm) | 370 × 220 × 320 | 435 × 300 × 400 | 445 × 375 × 525 | 465 × 425 × 570 | 430 × 610 × 680 |
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