Brethyn grid alcalïaidd canolig
Manylebau Cyffredin
| Gradd | Math o wydr | Pwysau (g/m²) | Cryfder Tynnol ≥ N/25mm (Ystof) | Cryfder Tynnol ≥ N/25mm (Weft) | Gwehyddu | Cynnwys Lleithder (%) | Cynnwys Hylosg (%) |
| WR200 | C | 200 +/- 10 | 688 | 637 | Plaen | ≤0.2 | 0.4–0.8 |
| WR400D | C | 333 +/- 17 | 1000 | 1000 | Plaen | ≤0.2 | 0.4–0.8 |
| WR400 | C | 400 +/- 20 | 1226 | 1140 | Plaen | ≤0.2 | 0.4–0.8 |
| WR600 | C | 600 +/- 30 | 1800 | 1700 | Plaen | ≤0.2 | 0.4–0.8 |
| WR800 | C | 800 +/- 40 | 2500 | 2200 | Plaen | ≤0.2 | 0.4–0.8 |
Nodiadau
● Lledau cynnyrch safonol: 100cm, 90cm, 125cm
● Lled mwyaf: 3200mm
