Ferskil tusken ASTM A249 A270 A269 en A213 RVS buizen

ASTM A269 is in standert spesifikaasje foar naadleaze en laske austenityske roestfrij stiel buizen foar algemiene korrosjebestindige en lege- as hege temperatuertsjinsten. ASTM A213 is in standert spesifikaasje foar naadleaze ferritic en austenitic alloy-stiel boiler, superheater, en waarmte-wikseler buizen.

STANDARD ASTMA249 ASTM A269 ASTMA270 ASTM213

Standert Tolerânsje fan bûtendiameter
(mm)
Muorre dikte (%) Lengte tolerânsje (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
ASTM 213 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

Post tiid: Jun-27-2023