ASTM A269 taybetmendiyek standard e ji bo lûleyên pola zengarnegir a austenîtîk ên bêserûber û weldkirî ji bo karûbarên gelemperî yên li hember korozyonê û germahiya nizm an bilind. ASTM A249 taybetmendiyek standard e ji bo boylerê pola austenîtîk a welded, superheater, guhezkera germê, û lûleyên kondensatorê. ASTM A213 taybetmendîyek standard e ji bo boyler-pola-pola alyûya ferrîtîk û austenîtîk, superheater, û lûleyên veguhezkar ên germê. Cudahiyên di navbera A269, A249, û A213 de di standardên taybetî de ne ku ew ji bo lûleyên pola zengarnegir temsîl dikin.
STANDARD ASTMA249 ASTM A269 ASTMA270 ASTM213
Rêzan | Tolerans ji Diameter Derve (mm) | Qûrahiya dîwar (%) | Toleransa Dirêjiyê (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 |
Dema şandinê: Jun-27-2023