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Duplex flange

Duplex flange is a kind of duplex steel flange which is the material made by duplex and super duplex stainless steel, popular material include ASTM A182 S31803, S32205 A182 Gr F51,F52, F53,F54, F55 ,F57,F59 , F60,F61. It is an austenitic-ferritic stainless variant with a higher stress corrosion cracking resistance in comparison to regular austenitic 304 and 316 stainless steel.

 Duplex flange is widely used for pipe line application in oil and gas industry, especially for Offshore and seawater pipeline system application.

We CCSC technology dedicate to total duplex flanges solution for our clients, our duplex flanges can meet and exceed the industry’s requirements in severe working condition, low or high temperature and related working pressures. The high strength of forged bodies make our duplex flange most reliable and long lasting.

Our duplex flanges are made in compliance with international standards such as API spec.6A, ANSI B16.5 and ASME B16.5 etc.

 

Features

Connection Type:   RTJ Flange,RF Flange,Buttweld end

Material: ANSI UNS Duplex steel :F51(S31803) , F52(S32900), F53(S32750), F60(S32205), F68(S32304)

Nominal size:       1 inch to 30 inch   

Design Standard:   API 6A,ANSI B16.5 ,ASME B16.5,API 17D

 

Application in oil and gas industry

  Offshore Oilfield manifold system,     Offshore crude oil and natural gas Pipeline

  offshore drilling & production         Offshore drilling & production

  Subsea pipeline application           Oil and gas processing plant

 

Guidelines for procurement:  Client’s inquiry should include belows information before purchasing

1, Flange type

2,Flange connection :   RF or RTJ   

3, Flange standard:     API 6A, ANSI/ASME B16.5,API 17D

4,Working pressure:    ASME Class 150 to Class 2500  , API 6A 2000PSI to 20000 PSI

5,Nominal size:           1 inch to 30 inch  ,1-13/16” to 30”

6,Material requirement :   

Duplex stainless steel (F51/UNS S31803,F52/UNS S32900 ,F53/UNS S32750, F55/UNS S32760,

F60/UNS S32205, F61/UNS S32505)

6,Quantity

 

 

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