I-ASTM A269 ingukucaciswa okujwayelekile kweshubhu yensimbi engenamthungo ne-weuntenitic yensimbi engenacala yokulwa nokugqwala okuvimbela ukuqina kanye nokushisa okuphansi noma okuphezulu I-ASTM A213 ingukucaciswa okujwayelekile kwe-ferritic ne-auntenitic alloy-ensimbi ye-boiler, i-supersheater, kanye namashubhu-exchanger run.Umehluko phakathi kwamazinga athile abonisa ama-tubing wensimbi angagqwali.
I-AsTma249 ASTM A269 ASTMA270 ASTM213
| -Vamile | Ukubekezelela ububanzi obungaphandle (mm) | Ubukhulu obudongeni (%) | Ubude Ukubekezelelana (MM) | ||
| I-ASTM A249 | <25.0 | +0.10 -0.11 | ± 10% | ||
| ≥25.0-≤40.0 | ± 0.15 | ||||
| > 40.0- <50.0 | ± 0.20 | I-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 | U +0.38 -0.64 | ||||
| > 200.0-≤225.0 | I- +0.38-1.14 | ||||
| I-ASTM A269 | <38.1 | ± 0.13 | |||
| ≥38.1 ~ <88.9 | ± 0.25 | ||||
| ≥88.9- <139.7 | ± 0.38 | ± 15.0% | I-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 | ||||
| I-ASTM213 | D <25.4 | ± 0.10 | +10 / 10 | + 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 | ||||
Isikhathi sePosi: Jun-27-2023