OD Scarfing Insert – SNG452
The OD Scarfing Insert – SNG452 is a square tungsten carbide insert widely used in tube and pipe mills for removing external weld beads (OD scarfing) during high-frequency welded (HFW) pipe production.
- Material: Made from tungsten carbide, often with CVD coatings to resist heat, abrasion, and deformation.
- Relief Angles & Radii: Available in multiple radii (e.g., R12, R14, R16, R18, R20, R25, R30, R40, R50, R60, R70, R80). The radius is chosen based on tube outer diameter — usually between 110% and 150% of the tube OD.
- Applications: Designed for outer diameter weld bead removal in ERW/HFW tube mills, ensuring smooth surfaces for downstream processes like galvanizing, threading, or coating.
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- High precision: Produces clean OD surfaces with minimal burrs.
- Durability: Carbide + coating resists thermal shock and wear in continuous scarfing operations.
- Cost-effective: Multi-edge design reduces insert change frequency.
- Compatibility: Fits standard OD scarfing holders used in tube mills worldwide.
| Model | Application Range | L (mm) | S (mm) | R (mm) |
|---|---|---|---|---|
| SNG 452-10R | Φ10-Φ15 | 12.7 | 7.94 | 10 |
| SNG 452-16R | Φ15-Φ25 | 12.7 | 7.94 | 16 |
| SNG 452-20R | Φ25-Φ33 | 12.7 | 7.94 | 20 |
| SNG 452-25R | Φ33-Φ44 | 12.7 | 7.94 | 25 |
| SNG 452-30R | Φ40-Φ53 | 12.7 | 7.94 | 30 |
| SNG 452-40R | Φ50-Φ73 | 12.7 | 7.94 | 40 |
| SNG 452-50R | Φ73-Φ89 | 12.7 | 7.94 | 50 |
| SNG 452-60R | Φ76-Φ108 | 12.7 | 7.94 | 60 |
| SNG 452-70R | Φ97-Φ127 | 12.7 | 7.94 | 70 |
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