ASTM A312 and ASTM A790天津武进不锈钢管材
For ASTM A312 and ASTM A790, acc. to ASTM A999
| Size, mm |
Tolerance OD, mm |
| 13.72-48.3 |
+0.4/-0.8 |
| >48.3-114.3 |
+/- 0.8 |
| >114.3-219.1 |
+1.6/-0.8 |
Tolerances on wall thickness
| Size, mm |
Wall thickness, % |
WT/OD ratio |
| 13.72-73.03 |
+20/-12.5 |
All |
| 88.90-219.10 |
+22.5/-12.5 |
Less or equal to 0.05 |
| 88.90-219.10 |
+15/-12.5 |
Above 0.05 |
Product standards
Sandvik 3R12 (ASTM 304L), Sandvik 3R65 and 3R60 (ASTM 316L)
- ASTM A312 incl. corrosion test acc. to ASTM A262 Pr.E.
- NACE MR-0.175/ISO 15156
- Tolerances and leak test acc. to ASTM A312/A999
- NORSOK MDS-S01 (ASTM 316L)
Sandvik SAF 2205 (UNS S31803/S32205) and SAF 2507 (UNS S32750)
- ASTM A790 incl. corrosion test acc. to ASTM G-48 Method A (Sandvik SAF 2205 at 25ºC/77ºF, Sandvik SAF 2507 at 50ºC/122ºF - both for 24 hours).
- NORSOK MDS D-41 (Sandvik SAF 2205)
- NORSOK MDS D-51 (Sandvik SAF 2507)
Sandvik 2RK65 (UNS N08904)
ASTM A312. Sizes marked 2) are also tested acc. to AD2000-W2 Einbaurohre TÜV Bl. 421 incl. hot tensile test at +400ºC (752ºF).
