ASTM A269 jẹ sipesifikesonu boṣewa fun aisi-ara ati welded austenitic alagbara, irin ọpọn fun ipata gbogbogbo ati awọn iṣẹ iwọn otutu kekere tabi giga.ASTM A249 jẹ sipesifikesonu boṣewa fun igbomikana irin austenitic welded, superheater, paarọ ooru, ati awọn tubes condenser. ASTM A213 ni a boṣewa sipesifikesonu fun seamless ferritic ati austenitic alloy-irin igbomikana, superheater, ati ooru-exchanger tubes.The iyato laarin A269, A249, ati A213 dubulẹ ni pato awọn ajohunše ti won ašoju fun irin alagbara, irin ọpọn.
Standard ASTMA249 ASTM A269 ASTMA270 ASTM213
| Standard | Ifarada ti Ita opin (mm) | Sisan ogiri (%) | Ifarada Gigun (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 | ||||
Akoko ifiweranṣẹ: Jun-27-2023