Astm A269 madaidaicin takamaiman bayani ne ga rashin daidaituwa da kuma welded auscheater.teater, da kuma mawuyacin hali ne ga seadestars na sama da kuma muni. Bambance-bambancen da ke tsakanin A269, A249, da A213 suna cikin ƙayyadaddun ƙa'idodin da suke wakilta don bututun ƙarfe.
STANDARD ASTMA249 ASTM A269 ASTMA270 ASTM213
| Daidaitawa | Haƙuri na Waje Diamita (mm) | Kaurin bango (%) | Haƙuri Tsawon (mm) | ||
| ASTM A249 | <25.0 | + 0.10 - 0.11 | ± 10% | ||
| ≥25.0-≤40.0 | ± 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 | ± 0.13 | |||
| ≥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 | ||||
| Saukewa: ASTMA270 | ≤25.4 | ± 0.13 | ± 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 | ||||
| Saukewa: ASTM213 | D | 25.4 | ± 0.10 | +20/0 | + 3.0/0 | |
| 25.4-38.1 | ± 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 | ||||
Lokacin aikawa: Juni-27-2023