SPI Finish Standard: Premier SPI Surface Grades A1 to D3 for Mold & Plastic
SPI Surface Finish Classification Chart
| Grade Group | SPI Finish Grades | Method / Appearance |
|---|---|---|
| Grade A (Glossy) | SPI A1, SPI A2, SPI A3 | Diamond Buff Polishing (High Gloss) |
| Grade B (Semi-Gloss) | SPI B1, SPI B2, SPI B3 | Paper Polishing (Semi-Gloss) |
| Grade C (Matte) | SPI C1, SPI C2, SPI C3 | Stone Polishing (Matte Finish) |
| Grade D (Textured) | SPI D1, SPI D2, SPI D3 | Dry Blasting (Dull/Textured Finish) |
Detailed Specifications & Plaque Standards
E: Plastic SPI Finish Standard Scale
Dimensions: 200×145×3.5mm – A comprehensive SPI finish scale featuring both black and transparent materials (PP, ABS, PC). This master scale is manufactured using state-of-the-art EDM, Laser (GF-AgieCharmilles), Etching, and precision Sandblasting technology to ensure the most accurate SPI surface representation.
F: Steel SPI Finish Standard Plate Set
Dimensions: 25×48mm – A professional SPI finish standard set consisting of 12 individual steel plates. These are high-precision samples manufactured by GF-AgieCharmilles in Switzerland, providing a definitive SPI surface benchmark for mold makers and engineers worldwide.
Global Standard for SPI Surface Finishing
The SPI finish (Society of the Plastics Industry) standard is essential for defining the aesthetic and functional quality of plastic parts. Whether you require the extreme clarity of SPI A1 or the uniform matte texture of SPI C1, our physical standard scales provide the perfect reference.
Our solutions cover the entire spectrum: SPI A1, A2, A3 for high-gloss diamond finishes; SPI B1, B2, B3 for fine grit paper finishes; SPI C1, C2, C3 for stone-grade matte surfaces; and SPI D1, D2, D3 for specialized sandblasted textures. We ensure consistency across metal, steel, and plastic surfaces.
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