Specification: ASTM A182 / ASME SA182
Size: 1/2" (15 NB) to 48" (1200NB)
JIS: 5K, 10K, 16K, 20K, 30K, 40K, 63K
Dimension Standard: ANSI, ASME, BS, DIN, EN etc.
Type: Ring Joint Flange (RTJ), Flat Face Flange (FF),
Raised Face Flange (RF), Male and Female Flange (M & F),
Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)
Pressure rating: 150#, 300#, 600#, 900#, 1500#, 2500#,
PN6, PN10, PN16, PN25, PN40, PN64 etc.
Due to their exceptional properties and performance, duplex steel flanges, specifically S31803 and S32205 grades, are widely used in various industries. These grades belong to the duplex stainless steel family, which exhibits a unique combination of austenitic and ferritic microstructures. Let's delve into the properties of each grade individually.
S31803 is a popular duplex steel grade known for its excellent corrosion resistance, particularly in chloride-containing environments. It offers high tensile strength and good toughness, making it suitable for applications where strength and durability are crucial. The grade also demonstrates good weldability, allowing for easy fabrication and installation. S31803 flanges are commonly used in chemical processing plants, oil and gas industries, and marine applications, where corrosion resistance and reliability are paramount.
On the other hand, S32205 is a higher-strength variant of duplex steel, often referred to as "lean duplex." It exhibits improved resistance to stress corrosion cracking, making it suitable for aggressive media applications and high temperatures. The increased strength of S32205 allows for weight reduction in structures without compromising structural integrity. This grade is widely used in petrochemical, pulp and paper industries, and offshore oil and gas production.
Both S31803 and S32205 duplex steel flanges possess excellent mechanical properties, including high yield and tensile strength and good impact resistance. They offer superior resistance to pitting, crevice corrosion, and general corrosion, even in environments where traditional stainless steel would fail. These properties are attributed to chromium, molybdenum, and nitrogen alloy composition.
|Size Chart||1/2" (15 NB) to 48" (1200NB) DN10~DN5000|
|Standards||API7S-15, API7S-43, API605, ANSI/ASME B16.5, B16.47 Series A & B, B16.48, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, EN1092|
|JIS||5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K|
|UNI||6Bar 10Bar 16Bar 25Bar 40Bar|
|Pressure Rating ANSI||600 LBS, 900 LBS, 150 LBS, 2500 LBS, 300 LBS, 1500 LBS|
|Pressure Calculation in DIN||16Bar 6Bar 25Bar 40Bar 10Bar / PN10 PN16 PN6 PN25 PN64 PN40|
|EN||6Bar 10Bar 16Bar 25Bar 40Bar|
|Coating||Anti-rust Paint, Zinc Plated,Oil Black Paint, Cold and Hot Dip Galvanized, Yellow Transparent|
|Connect Type/ Flange Face Type||Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Raised Face (RF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove|
|Equipment||Bending machine, Pushing Machine,Press machine, electric bevelling machine, Sand-blasting machine etc|
|Origin||Indian / West Europe / Japan / USA / Korean|
As per your drawing
AS, ANSI, BS, DIN and JIS
|Test||Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector|
|Most common types||Forged / Threaded / Screwed / Plate|
|Test Certificates||EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
|Uses & application||
|Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175|
Furthermore, duplex steel flanges exhibit good fatigue strength, essential for applications subjected to cyclic loading and vibrations. They maintain their mechanical properties over various temperatures, ensuring reliable performance in extreme conditions.
At our company, we take utmost care in packaging Duplex Steel S31803/S32205 flanges to ensure their safe delivery. Each flange is meticulously wrapped and secured to prevent any damage during transportation. We use high-quality packaging materials that protect against moisture, impact, and other external factors, ensuring that the flanges reach our customers in perfect condition.