Phapang pakeng tsa ASTM A249 A270 A269 le A213 Tšepe e sa ruseng

ASTM A269 ke tlhaloso e tloaelehileng bakeng sa liphaephe tsa tšepe e sa hloekang ea austenitic tse se nang sekoli le tse phuthetsoeng bakeng sa lits'ebeletso tse akaretsang tse hanelang mafome le tse mocheso o tlase kapa o phahameng.ASTM A249 ke tlhaloso e tloaelehileng bakeng sa liphaephe tsa tšepe ea austenitic tse phuthetsoeng, superheater, heat-exchange, le condenser tse phuthetsoeng.ASTM A213 ke tlhaloso e tloaelehileng bakeng sa liphaephe tsa tšepe ea ferritic le austenitic alloy-steel tse se nang sekoli, superheater, le heat-exchange. Phapang lipakeng tsa A269, A249, le A213 e maemong a itseng ao li a emelang bakeng sa liphaephe tsa tšepe e sa hloekang.

ASTMA249 ASTM A269 ASTMA270 ASTM213 e Tloaelehileng

E tloaelehileng Mamello ea Bophara ba Kantle
(mm)
Botenya ba lebota (%) Bolelele ba mamello (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

Nako ea poso: Phuptjane-27-2023