Product Specifications
SMLSCO provides stainless steel forged loose flanges that comply with ASTM A182 standards, supporting various international standard interfaces for industrial piping systems. Our comprehensive size range and pressure ratings (including PN and Class systems) meet diverse project requirements.
Standard: ASTM A182
Material Grade: F316L / 316
Nominal Diameter: DN150
Pressure Rating: PN16
Outer Diameter Range: ≤80"
Flange Type: Loose Flange / Lap Joint Flange
Face Type: RF (Raised Face), FF (Flat Face), Customizable
Certification: PED, ISO, NORSOK M-650
Chemical Composition & Mechanical Properties
F316L offers excellent corrosion resistance and mechanical stability with the following properties:
- Composition: C≤0.03%, Cr 16-18%, Ni 10-14%, Mo 2-3%
- Tensile strength: ≥485MPa
- Yield strength: ≥170MPa
- Elongation: ≥30%
- Low carbon content enhances welding performance and reduces intergranular corrosion risk
Manufacturing Capabilities
SMLSCO provides complete forging and processing solutions with:
- Full production cycle from blank preparation to final testing
- 500 tons of flange blanks in stock
- Rapid support for non-standard and inventory orders
- Certifications: PED, ISO, NORSOK M-650
Key Manufacturing Processes
- Forging: Free forging process ensures dense structure and superior mechanical properties
- Heat Treatment: Solution annealing eliminates stress and enhances corrosion resistance
- Machining: Precision control of dimensions and surface finish for reliable sealing performance
Quality Assurance
SMLSCO implements rigorous inspection protocols including:
- 100% dimensional and visual inspection
- Traceability coding system
- Optional PMI material analysis, UT, PT testing
- Third-party witness inspection available