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Kencotube is one of the top brand manufacturer & stockiest of high quality Duplex Steel Flanges, which are more prone to precipitation of sigma phase, nitrides and carbides than corresponding austenitic steels, causing embrittlement and reduced corrosion resistance. Duplex Steel Pipe Flanges is hyper steel for service in highly corrosive conditions, where very high mechanical strength is required. Duplex Steel Slip On Raise Face Flanges has high corrosion resistance in chloride containing media, including seawater, which makes the grade an ideal for use in deep-water umbilicals and a range of other oil and gas applications. As medium-alloy steel, Duplex Steel Blind Raised Face Flanges has superior corrosion resistance in most media compared to the standard austenitic stainless steel ASTM 316L and twice the mechanical strength.
Duplex Steel Weld Neck Raised Face Flanges offers excellent and consistent machining properties for increased cutting speeds, reduced tool wear and set-up times. The formation of intermetallic phases in Duplex Steel Plate Raised Flanges such as sigma phase occurs in the temperature range 600 Degree C - 1000 Degree C and decomposition of ferrite occurs in the range 350 Degree C - 500 Degree C (475 Degree C embrittlement).The basic idea of Duplex Steel Long Weld Neck Flanges is to produce a chemical composition that leads to an approximately equal mixture of ferrite and austenite. The chemical composition of Duplex Steel Lap Joint Flanges is balanced to give approximately equal amounts of ferrite and austenite in solution-annealed condition.
|Specifications||ASTM A182 / ASME SA182|
|Standards||ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges etc.|
|Dimensions||ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.|
|Size||1/8" NB TO 24" NB|
|Class / Pressure||150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.|
|Flange Face Type||Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)|
|Grade||A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61|
|Duplex 2205||1.4462||S31803, S32205|
|22.0-23.0||4.50-6.50||3.00-3.50||.030 Max||0.14-0.20||2.00 Max||1.00 Max||.030 Max||.020 Max||Bal|
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