ASTM A269 bụ nkọwapụta ọkọlọtọ maka enweghị atụ na-agba nchara nchara nke Genenitic steepụ Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Austhed Aust-ma ọ bụ nke dị ala. ASTM A213 bụ nkọwapụta ọkọlọtọ maka enweghị ntụpọ na mbara igwe na-enweghị atụ, na -adị iche iche dị iche iche.
ASTMA244 ASTM A269 ASTMA270 ASTM213
| Standadi | Ndidi nke dayameta na mpụga (mm) | Ọgwụ ọkpụrụkpụ (%) | Ntachi anya (mm) | ||
| ASTM A249 | <25.0 | +0.10 -0.11 | ± 10% | ||
| ≥25.0-≤40.0 | 0 0.15 | ||||
| > 40.0- <50.0 | ± 0.20 | OD <50.8 | + 3.0-0.0 | ||
| ≥50.0 ~ <65.0 | ± 0.25 | ||||
| ≥65.0- <75.0 | ± 0.30 | ||||
| ≥75.0 ~ <100.0 | ± 0.38 | Od≥50.8 | + 5.0-0.0 | ||
| ≥100 ~ ≤200.0 | +0.38 -0.64 | ||||
| > 200.0-≤225.0 | +0.38 -1.14 | ||||
| ASTM A269 | <38.1 | 0 03 | |||
| ≥38.1 ~ <88.9 | ± 0.25 | ||||
| ≥88.9- <139.7 | ± 0.38 | 15.0% | Od <38.1 | + 3.2-0.0 | |
| ≥139.7 ~ <203.2 | ± 0.76 | ± 10.0% | 0d ≥38.1 | + 4.0-0.0 | |
| ≥203.2- <304.8 | ± 1.01 | ||||
| ≥304.8- <355.6 | ± 1.26 | ||||
| ASTMA270 | ≤25.4 | 0 03 | ± 10% | + 10-0.0 | |
| > 25.4-≤50.8 | ± 0.20 | ||||
| > 50.8 ~ ≤62 | ± 0.25 | ||||
| > 76.2- ≤101.6 | ± 0.38 | ||||
| > 101.6 ~ <139.7 | ± 0.38 | ||||
| ≥139.7-203.2 | ± 0.76 | ||||
| ≥203 2 ~ ≤304.8 | ± 1.27 | ||||
| ASTM213 | D <25.4 | 0 0.10 | +20/0 | + 3.0 / 0 | |
| 25.4 ~ 38.1 | 0 0.15 | ||||
| 38.1 ~ 50.8 | ± 0.20 | ||||
| 50.8 ~ 63.5 | ± 0.25 | +22/0 | + 5.0 / 0 | ||
| 63.5 ~ 76.2 | ± 0.30 | ||||
| 76.2 ~ 101.6 | ± 0.38 | ||||
| 101.6 ~ 190.5 | + 0.38 / -0.64 | ||||
| 190.5 ~ 228.6 | + 0.38 / -1.14 | ||||
Oge post: Jun-27-2023