ASTM A269 waa qeexitaan caadi ah oo loogu talagalay tuubooyinka birta aan lahayn ee austenitic oo aan kala go 'lahayn oo la alxamayn karo ee loogu talagalay adeegyada guud ee iska caabbinta daxalka iyo heerkulka hooseeya ama sare. ASTM A249 waa qeexitaan caadi ah oo loogu talagalay kuleyliyaha birta austenitic ee la alxamay, kuleyliyaha sare, beddelaha kulaylka, iyo tuubooyinka kondenserka. ASTM A213 waa qeexitaan caadi ah oo loogu talagalay kuleyliyaha birta ah ee aan kala go'a lahayn ee ferritic iyo austenitic, kuleyliyaha sare, iyo tuubooyinka beddelaha kulaylka. Farqiga u dhexeeya A269, A249, iyo A213 waxay ku jiraan heerarka gaarka ah ee ay u taagan yihiin tuubooyinka birta aan lahayn.
Heerka ASTMA249 ASTM A269 ASTMA270 ASTM213
| Heerka Caadiga ah | Dulqaadka Dhexroorka Dibadda (mm) | Dhumucda derbiga (%) | Dulqaadka Dhererka (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 | ||||
Waqtiga boostada: Juun-27-2023