BHZG Series Automatic Butt Welding Machine for Straight Pipes
Product Overview
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This BHZG series automatic butt welding machine for straight pipes is mainly used for automatic circumferential seam welding to extend multi-section long straight pipes. It adopts dual chucks or four chucks for clamping. The chucks are hollow, allowing the pipe to pass through; the chucks at both ends respectively clamp two straight pipe sections for rotation. No tack welding is required before welding; the chucks drive the pipe sections to rotate synchronously, and the welding torch swings for welding at a relatively fixed position above the workpiece, realizing single-side welding with double-side forming. It meets the high-quality welding requirements for butt circumferential seams of multiple straight pipes. In addition, it can be equipped with an automatic loading/unloading system and a logistics conveying system to form a straight-pipe butt-joint production line for flow-line welding operations.
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Welding Quality
Strict process standards ensure the reliability of every weld point
- Qualified inspection: Good welding quality; weld RT/UT inspection qualified;
- Mechanical properties: Meets the requirements for ball-passing tests or mechanical property inspections such as impact, tensile, and bending;
- Attractive appearance: Beautiful weld formation, free of defects such as porosity, undercut, cracks, slag inclusion, incomplete penetration, and lack of fusion.
Product Specifications
An overview of model specifications and technical performance indicators
| Equipment Model | BHZG-3 | BHZG-4 | BHZG-8 |
|---|---|---|---|
| Applicable Pipe Diameter | Φ22-76mm | Φ32-114mm | Φ60-219mm |
| Applicable Material | Carbon steel, alloy steel, stainless steel, copper-nickel alloy, etc. | ||
| Applicable Bevel Type | Single V (30°, 37.5°) bevel or U-type bevel | ||
| Workpiece Type | Welding of circumferential butt weld seams between long straight pipes | ||
| Welding Process |
TIG
Hot-wire TIG
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| Welding Speed | TIG: 70-150mm/min, hot-wire TIG: 200-300mm/min | ||
| Process Features | Dual-head dual-chuck or four-chuck synchronous clamping and synchronous rotational welding; no tack welding is required to fix the joint before welding | ||
| Welding Method | Workpiece rotation with torch oscillation welding | ||
| Multi-layer, Multi-pass Welding | Single-layer welding is optional; continuous automatic multi-layer, multi-pass welding can also be selected | ||
| Control Method | WPS welding process expert database system with automatic program control | ||
| Basic Equipment Composition | Straight-pipe butt welding main unit + automatic lifting base + CNC control system + welding power supply | ||
| Optional Chuck Configuration |
Two sets of pneumatic chucks
Four sets of pneumatic chucks
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※Due to continuous product iteration and upgrades, and different operating conditions across industry users, configuration and performance parameters are subject to the product at the time of order.
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