ASTM A182 F304/F304L Weld neck Flange,A182 F304L Slip on Flange ASME B16.5
Austenitic Stainless Steel Flanges for Corrosion-Resistant Piping
ASTM A182 F304 and F304L flanges are forged austenitic stainless steel flanges manufactured for pressure piping systems requiring excellent corrosion resistance, strength, and weldability. Produced in accordance with ASTM A182, these flanges are commonly supplied as weld neck (WN) flanges and slip on (SO) flanges, with F304L preferred for welded applications due to its low carbon content.
ASTM A182 F304/F304L flanges are widely used in chemical processing, food & beverage, pharmaceuticals, oil & gas, and water treatment systems.
We are the manufacturer of ASTM A182 F304/F304L Weld neck Flange,A182 F304L Slip on Flange,A182 F304L Blind Flanges,
🔹 Weld Neck Flange (WN)
ASTM A182 F304 / F304L weld neck flanges feature a long tapered hub that reduces stress concentration at the pipe joint, making them ideal for high-pressure and high-temperature service.
🔹 Slip On Flange (SO)
ASTM A182 F304L slip on flanges are designed for easy installation, where the pipe is inserted into the flange and welded. Slip on flanges are commonly used in low to medium pressure systems.
🔹 Blind Flange (BL)
Size Range & Pressure Class
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Nominal Pipe Size (NPS):
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ASME B16.5: 1/2″ – 24″
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ASME B16.47: 26″ – 60″
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Pressure Class: 150 / 300 / 600 / 900 / 1500 / 2500
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Facing: RF / RTJ / FF
Bridas de tubos de acero inoxidable 304 / 304L / 304H
We also produce high quality ASME B16.5 ASTM A182 F304/F304L Flanges
ASME B16.5 ASTM A182 F304L Blind RF Flanges
ASME B16.5 ASTM A182 F304L Blind RTJ Flanges
ASME B16.5 ASTM A182 F304L Weld neck RF Flanges
ASME B16.5 ASTM A182 F304L Slip on RF Flanges
The material of “ASTM A182 F304” and “ASTM A182 F304L” are under the same material standard ASTM A182 ,but the only chemical compostion DIFFERENCE BETWEEN THE MATERIAL OF ASTM A182 F304 AND ASTM A182 F304L is that F304L has a slightly lowe carbon content than A182 F304.
A 182-A182M is the a standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service.
They are all a kind of very common forged stainless steel material which can be made for A182 F304 FLANGES AND A182 F304L Flanges.
1, A182 F304 FLANGES AND A182 F304L Flanges.Chemical compostion comparison
| MIN | C | Mn | P | S | Si | Ni | Cr |
| A182 F304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 8.0-11.0 | 18.0-20.0 |
| A182 F304L | 0.03 | 2.00 | 0.045 | 0.030 | 1.00 | 8.0-13.0 | 18.0-20.0 |
2, A182 F304 FLANGES AND A182 F304L Flanges Tensile and yield strength
| MIN | Tensile Strength | Yield Strength | Elongation | Reduction of area |
| A182 F304 | 515 | 205 | 30 | 50 |
| A182 F304L | 485 | 170 | 30 | 50 |
3, “L” means lower carbon content. So the A182 F304L is with lower carbon content than the A182 F304 products.,white we can make A182 F304/F304L Dual grade,
Heat Treatment
ASTM A182 F304/F304L flanges are supplied in solution annealed condition to restore corrosion resistance and ensure uniform microstructure.
How to order our ASTM A182 F304L Flanges
EXAMPLE#1
Name: AWWA SO Flange.
Body Material: ASTM A182 F304L.
Size: 12 Inch, STD Bore.
Pressure: Class D.
EXAMPLE#2
Material: ASTM A182 F304L.
Standard: ASME B16.5.
Thickness: SCH80.
Size: 10 Inch (DN 250).
Pressure: 900LBS.
Ends: RF.
ASTM A182 F304-F304L Weld neck Flange ASME B16.5
ASTM A182 F304/F304L weld neck flanges and F304L slip on flanges provide reliable corrosion resistance, excellent weldability, and long-term performance in pressure piping systems. With full compliance to ASTM A182 and ASME flange standards, these stainless steel flanges are a trusted solution across chemical, food, and industrial applications.
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