ASTM A182 F316/F316L Blind Flange (BLRF & BLRTJ) Manufacturer | ASME B16.5 Stainless Steel Blind Flanges
ASTM A182 F316/F316L Blind Flange Supplier & Manufacturer in China
We are a professional manufacturer and exporter of ASTM A182 F316/F316L Stainless Steel Flanges in China, supplying high-quality forged flanges for the oil & gas, petrochemical, power generation, shipbuilding, offshore, marine, water treatment, and chemical processing industries.
All flanges are manufactured according to international standards and can be supplied with:
- EN 10204 3.1 Mill Test Certificate (MTC)
- EN 10204 3.2 Third-Party Inspection Certificate
- DNV, ABS, BV, LR, CCS, and NK Class Approvals
- PMI, Mechanical Testing, Chemical Analysis, and NDT Reports
What Is ASTM A182 F316/F316L Blind Flange?
ASTM A182 F316 and F316L blind flanges are forged austenitic stainless steel flanges designed to seal the end of piping systems, valves, pressure vessels, and process equipment.
These flanges are available with the following facing types:
- Blind Raised Face (BLRF)
- Blind Ring Type Joint (BLRTJ)
- Flat Face (FF)
- Raised Face (RF)
- Ring Type Joint (RTJ)
Manufactured in accordance with ASME B16.5, ASME B16.47 Series A & B, and EN 1092-1 standards, ASTM A182 F316/F316L blind flanges provide reliable sealing performance in high-pressure and corrosive service environments.
Why Choose ASTM A182 F316/F316L Blind Flanges?
The addition of molybdenum significantly improves corrosion resistance compared with standard 304 stainless steel.
Key Advantages
- Excellent resistance to pitting corrosion
- Superior crevice corrosion resistance
- Outstanding chemical resistance
- High-temperature strength and durability
- Excellent weldability
- Long service life in aggressive environments
- Suitable for offshore and marine applications
Difference Between F316 and F316L
ASTM A182 F316 is a molybdenum-bearing stainless steel offering enhanced corrosion resistance.
ASTM A182 F316L is the low-carbon version of F316, providing improved weldability and minimizing the risk of intergranular corrosion after welding.
For welded piping systems and corrosive applications, ASTM A182 F316L is generally the preferred choice.
Astm A182 F316 Stainless steel Flange specification
| Specification | Details |
|---|---|
| Material Standard | ASTM A182 / ASME SA182 |
| Grades | F316, F316L, F316H, F316LN |
| Product Type | Blind Flange (BLRF, BLRTJ) |
| Manufacturing Process | Forged |
| Size Range | 1/8″ NB to 48″ NB |
| Pressure Class | Class 150, 300, 600, 900, 1500, 2500 |
| DIN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 |
| Face Type | FF, RF, RTJ |
| Inspection | PMI, UT, PT, MT, Hydro Test |
| Certification | EN 10204 3.1 / 3.2 |
Manufacturing Standards
ASME / ANSI Standards
- ASME B16.5
- ASME B16.47 Series A
- ASME B16.47 Series B
- MSS SP-44
- ASME B16.36
- ASME B16.48
- API 605
European Standards
- EN 1092-1
- DIN 2527
- DIN 2566
- DIN 2573
- DIN 2576
- DIN 2631 to DIN 2638
- DIN 2673
British Standards
- BS 4504
- BS 1560
- BS 10
ASTM A182 F316/F316L Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | 1.4404 |
| DIN | X2CrNiMo17-12-2 |
| UNS | S31603 |
| ASTM | A182 F316L |
| ASME | SA182 F316L |
ASTM A182 F316/F316L Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Chromium (Cr) | 16.0 | 18.0 |
| Nickel (Ni) | 10.0 | 14.0 |
| Molybdenum (Mo) | 2.0 | 3.0 |
| Manganese (Mn) | – | 2.0 |
| Silicon (Si) | – | 0.75 |
| Carbon (C) | – | 0.03 |
| Phosphorus (P) | – | 0.045 |
| Sulfur (S) | – | 0.03 |
| Nitrogen (N) | – | 0.10 |
| Iron (Fe) | Balance | Balance |
ASTM A182 F316/F316L Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 75 ksi (515 MPa) |
| Yield Strength (0.2%) | 30 ksi (205 MPa) |
| Elongation | 40% |
| Hardness | Max 217 HB |
Physical Properties
| Property | Value |
|---|---|
| Density | 0.285 lb/in³ |
| Poisson’s Ratio | 0.30 |
| Electrical Resistivity | 445 Ohm-circ mil/ft |
| Thermal Conductivity | 7.8 Btu·ft/ft²·hr·°F |
Applications of ASTM A182 F316/F316L Blind Flanges
ASTM A182 F316/F316L blind flanges are widely used in:
- Oil and Gas Pipelines
- Offshore Platforms
- Shipbuilding Industry
- Marine Engineering
- Petrochemical Plants
- Chemical Processing Facilities
- Pharmaceutical Manufacturing
- Food Processing Equipment
- Desalination Plants
- Power Generation Projects
- Water Treatment Systems
Their excellent resistance to chlorides and seawater corrosion makes them particularly suitable for offshore and marine environments.
Quality Assurance and Inspection
Every ASTM A182 F316/F316L Blind Flange can be supplied with:
- EN 10204 3.1 Material Test Certificate
- EN 10204 3.2 Third-Party Inspection Certificate
- Positive Material Identification (PMI)
- Ultrasonic Testing (UT)
- Dye Penetrant Testing (PT)
- Magnetic Particle Testing (MT)
- Dimensional Inspection
- Hydrostatic Testing
- NACE MR0175 Compliance (Optional)
ASTM A182 F316 / F316L Blind Flanges (BLRF & BLRTJ) provide a reliable and durable solution for sealing corrosive and pressure-critical piping systems.
Manufactured to ASME B16.5, these stainless steel blind flanges ensure excellent corrosion resistance, mechanical integrity, and long service life in demanding industrial applications.
How to order our Stainless steel A182 F316L Flanges?
Example#1,
ASTM A182 F316L Blind Flange, RF, 2 IN, CL 150, SCH 40s.
