ASTM A269 se yon spesifikasyon estanda pou tib asye pur san pwoblèm ak soude austenitic pou sèvis jeneral ki reziste korozyon ak ba-oswa wo-tanperati. ASTM A213 se yon spesifikasyon estanda pou chodyè asye pur feritik ak austenitic alyaj, sipèchofaj, ak tib echanjeur chalè. Diferans ki genyen ant A269, A249, ak A213 se nan estanda espesifik yo reprezante pou tib asye pur.
STANDARD ASTMA249 ASTM A269 ASTMA270 ASTM213
| Estanda | Tolerans nan dyamèt deyò (mm) | Epesè mi (%) | Tolerans longè (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 | ||||
| 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 | ||||
| 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 | ||||
Tan pòs: Jun-27-2023