Phapang lipakeng tsa ASTM A249 A270 A269 le A213 Stainless steel tubing

ASTM A269 ke tekanyetso e tloaelehileng bakeng sa li-tubing tsa tšepe tse sa tsitsang le tse cheselitsoeng tsa austenitic bakeng sa lits'ebeletso tse thibelang kutu le tse tlase kapa tse mocheso o phahameng. ASTM A213 ke lintlha tse tloaelehileng bakeng sa boiler ea tšepe e se nang seamless le austenitic alloy-steel, superheater, le li-tubes tsa mocheso oa mocheso. Phapang pakeng tsa A269, A249, le A213 e itšetlehile ka litekanyetso tse khethehileng tseo li li emelang bakeng sa li-tubing tsa tšepe e sa hloekang.

MAEMO A ASTMA249 ASTM A269 ASTMA270 ASTM213

Standard Mamello ea Kantle Diameter
(mm)
Botenya ba lebota (%) Mamello ea Bolelele(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: Jun-27-2023