super duplex Stainless Steel

Super Duplex

  S32750 (F53)

  S32760 (F55)

Duplex

  S31803 (F51)

  S32205 (F60)


Several decades of years for stainless steel products, our staff are specialists and sophisticated. Give you more professional service with our excellent products.

 

General Properties:

Duplex stainless steel is composed by any two phase organization of the austenite, ferrite, and martensite about half and half of the proportion. But it usually refers to the austenite-ferrite duplex stainless steel, it possesses both austenite and ferrite stainless steel characteristics, which has the comprehensive mechanical properties of high strength and high toughness ; good resistance to crevice corrosion, pitting corrosion and stress corrosion cracking ability; good resistance to uniform corrosion ability; good welding performance, small thermal cracking tendency; high coefficient of thermal conductivity, small coefficient of linear expansion etc. It is widely used in methanol production of tubular reactor catalytic bundles; the pulp and paper industry of sulfuric acid cooking preheater tube bundle; marine and continental petroleum oil and gas gathering pipelines; vinyl chloride production of preliminary condenser; crude oildesalting device of the heat exchanger tube, etc.

 

Products types:

Pipe & tube : seamless and welded pipes and tubes in random length and cut to size

Fitting: BW and Forged Fittings

Flanges: ANSI, DIN, EN, JIS

Bar: Round , Square bar

Forgings

 

Standard Reference:

American Standard : ASTM A789/ASME SA789, ASTM A790/ASME SA790 ,etc.

Chinese: GB/T21833

EN,JIS,GOST standards are available acc. To clients detail requirement.

 

Grade:

No.

Grade

UNS


No.

Grade

UNS

1

F51

S31803


10

F54

S32740

2

F60

S32205


11

F53

S32750

3


S31500


12

F55

S32760

4

F61

S32550


13

329

S32900

5

F50

S31200


14

F52

S32950

6


S31260


15

F57

S39277

7


S32001


16

F59

S32520

8


S32304


17


S32906

9


S39274


18


S32003


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