ASTM A269 mangrupikeun spésifikasi standar pikeun pipa baja stainless austenitic anu mulus sareng dilas pikeun tahan korosi umum sareng jasa suhu rendah atanapi suhu luhur. alat keur ngagolakkeun, superheater, sarta tubes exchanger panas. Bedana antara A269, A249, sarta A213 perenahna dina standar husus aranjeunna ngagambarkeun pikeun tubing stainless steel.
Standar ASTMA249 ASTM A269 ASTMA270 ASTM213
| Standar | Toleransi Diaméter Luar (mm) | Ketebalan témbok (%) | Kasabaran Panjang (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 | ||||
waktos pos: Jun-27-2023