A182 GR. F51 RTJ RF ASME B16.5 6 6"Blind Flange Products Description
ASTM A182 Grade F51 (duplex stainless steel) blind flange,
ASTM A182 Grade F51 (duplex stainless steel) blind flange price, ASTM A182 Grade F51 (duplex stainless steel) blind flange supplier, ASTM A182 Grade F51 (duplex stainless steel) 6-inch blind flange, ASTM A182 Grade F51 (duplex stainless steel) 4-inch blind flange.
Material Standard (ASTM A182 Gr. F51):
Classified as Duplex Stainless Steel (Duplex 2205 / UNS S31803), combining the advantages of both ferritic and austenitic steels.
High Strength: Approximate yield strength of [Value] and tensile strength of [Value].
Excellent Corrosion Resistance: Possesses exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking.
Dimensions and Pressure Standard (ASME B16.5):
Applicable to pipe nominal sizes (NPS) ranging from 1/2" to 24".
Pressure ratings typically cover Class 150 through Class 2500.
Facing Types: Your description mentions two common facing types, but in practical applications, one must be chosen because they are not interchangeable:
RTJ (Ring Type Joint): Surface-machined with precision grooves, used with metal ring gaskets.
Features: Forms a metal-to-metal seal, best suited for ultra-high pressure (>Class 600) or high-temperature/intense vibration environments.
RF (Raised Face): The sealing area is slightly raised above the bolt hole plane, used with non-metallic or semi-metallic gaskets (such as spiral wound gaskets).
Features: The most commonly used type in industry, suitable for medium and low pressure systems and standard high-pressure systems.
3. Functions of Blind Flanges:
End Sealing: Used to completely close pipeline ends or container openings.
Maintenance Interface: Facilitates future pipeline cleaning, inspection, or expansion; simply remove the bolts to reopen the connection.
FAQ
Q: About Stainless Steel ASTM A182 Grade F51 (Duplex Stainless Steel) Blind Flange prices?
A: Prices from ranges $1 to $5 per kilogram, vary depending on size, wall thickness, supplier etc.
Q: Are you a stainless steel factory supplier?
A: Yes. Factory test certificate is shipped with the product.
Q: May I have some samples?
A: Yes, of course. samples are free but you have to pay the courier.
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