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