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; 100% ET + Hydro-test on tubes; solution annealed delivery. |
| 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 | 100% X-ray/UT on weld seams; stringent pressure holding tests per API 5L; bevelled ends at 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
- ASTM / ASME
- EN 10204 3.1/3.2
- API 5L
- JIS
- ISO 9001
- TÜV AD2000
- PED 2014/68/EU