Standard Framework
Standard Framework
To satisfy localized customs imports and structural engineering codes, our mills operate under the dimensional tolerances and testing disciplines of four major regulatory regimes.
ASTM / ASME
American Standards covering chemical limits and mechanical tensile configurations.
EN / DIN
European standards focusing on Charpy impact codes and cold toughness parameters.
JIS
Japanese standards defining dimensions and coatings of cold-rolled high-precision flats.
API
American Petroleum Institute specifications for demanding pipeline transfers.
Metallurgical Standards & Spec Compliance Directory
| Material Category | Core Specifications | Applicable Grades | Tolerances & Quality Regime |
|---|---|---|---|
| Stainless & Duplex Steels | ASTM A240, ASTM A312, ASTM A276, EN 10088-2, EN 10217-7, JIS G4305 | 304, 304L, 316, 316L, 321, 310S, 2205 (S32205), 2507 (S32750) | Thickness tolerances per ASTM A480 (or agreed standard); ET / hydro-test on tubes when required by the order or standard; solution-annealed delivery as specified. |
| Carbon & Structural Alloys | ASTM A36, ASTM A516, ASTM A29, EN 10025-2, EN 10250-2, JIS G3101 | A36, S235JR, S355JR, S355J2, Q235B, Q355B, Q355D, 45# (C45) | Dimensions per EN 10029; ultrasonic testing (UT) on medium/heavy plates per ASTM A578 upon request. |
| Energy Pipelines & Pressure Tubes | API 5L (PSL 1 & PSL 2), ASTM A53, ASTM A106, ASME SA106 | Grade B, X42, X52, X60, X65, X70 | Weld RT/UT and other NDT as specified in the PO/ITP or API 5L practice; pressure tests per the ordered standard; bevelled ends when required (e.g. 30°). |
| Galvanized & Coated Flat Products | ASTM A653, EN 10346, JIS G3302 | DX51D+Z, SGCC, G90 (Z275), Z180, Z120, S250GD, S350GD | Zinc mass deviation within ±10g/m²; anti-fingerprint (AFP) passivation; zero zinc peeling on bend tests. |
All Registered Technical Standards
- ISO 9001
- ISO 14001
- ISO 45001
- ASTM / ASME
- EN 10204 3.1
- API 5L
- JIS