Duplex Stainless steel

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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