ASTM A269 is in standert spesifikaasje foar naadloos en weldde Austenityske stielen tubing foar algemiene korroen-tsjinsten foar weldde A249 is in standert A10-útwreide, Superheater, Heat-Exchanger, en kondensator buizen. ASTM A213 is in standert spesifikaasje foar naadloos Ferritic en Austenitic Alloy-stielen, Superheater, en Heat-Exchanger Tusken yn 'e spesifike noarmen dy't se fertsjinwurdigje foar rustfrij stiel tubing.
Standard Astma249 Astm A269 Astma270 Astm213
| Standert | Tolerânsje fan diameter fan bûten (mm) | Muorre dikte (%) | Lingte 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 | Duorje o≥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 | + 3.2-2.0 | |
| ≥139.7 ~ <203.2 | ± 0,76 | ± 10,0% | 0d ≥ 00.1 | + 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-≤ ≤α50.8 | ± 0,20 | ||||
| > 50,8 ~ ≤62 | ± 0,25 | ||||
| > 76.2- ≤2101.6 | ± 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 | ||||
Posttiid: jun-27-2023