Metal Processing Service

Duplex?Steel Tube?ASTM?A790?S32750 / 2507 6096mm Length ISO 9001

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ASTM?A790?2507?duplex?steel?pickling?tube?are?always?purchased?by?the?clients?who?need?high?corrosion?tubes?.?

Compared to stainless steel tubes , duplex steel tubes have more higher corrosion ability . They can be used in sea industry .

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Item | Description |
Basic Information | Material Grade | ?S32205 , S31803 , S32304 , S32750 , F51 , F53 , 2205 , 2507 etc |
Outer Diameter | 6.00mm - 48.00mm |
Wall Thickness | 0.71mm - 2.11mm |
Length | Normally fixed length 6m , can as per customer’s requirement |
Standard | ASTM A789 ; ASTM A790 ; EN 10216-5 ect . |
Process Method | Cold Drawn or Cold Rolled |
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? ?Super duplex Stainless Steel is a highly alloyed , good performance duplex steel with a pitting resistance . Super Duplex offers good resistance to pitting and crevice corrosion . It is suited for use in aggressive environments . It also has good resistance to stress corrosion cracking in chloride and sour environments . And it has good resistance to erosion corrosion and corrosion fatigue .
? ?Super duplex stainless such as duplex is a mixed microstructure of austenite and ferrite which has improved strength over ferritic and austenitic steel grades . The main difference is super duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance .
? ?Super duplex has the same benefits as its counterpart - it has lower production costs when compared with similar ferritic and austenitic grades and due to the materials increased tensile and yield strength , in many cases this gives the purchaser the welcomed option of purchasing smaller thicknesses without the need to compromise on quality and performance .?

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Application :

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1 .?Petroleum

2 .?Chemical industry

3 .?Instrument

4 .?Industrial transportation

5 .?Mechanical structure industry

6 .?Need high corrosion ability pipe& acute;s industry , such as offshore industry etc

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Test :

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1 .?NTD ( Ultrasonic test , Eddy Current test )

2 .?Mechanical Test ( Tension Test , Flaring Test , Flattening Test , Hardness Test , Hydraulic test )

3 .?Metal Test ( Metallographic Analysis , Impact Test-High/low temperature )

4 .?Chemical Analysis ( Photoelectric Emission Spectroscopic )

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ASTM A790 Standard |
2205 / S32750 Elements |
(C)?Carbon ,?max : 0.030 |
(Mn)?Manganese ,?max : 1.20 |
(P)?Phosphorus ,?max : 0.035 |
(S)?Sulfur ,?max : 0.020 |
(Si)?Silicon ,?max : 0.80 |
(Ni)?Nickel : 6.0 - 8.0 |
(Cr)?Chromium : 24.0 - 26.0 |
(Mo)?Molybdenum : 3.0 - 5.0 |
(Fe)?Iron : -- |
(Cu)?Copper , max : 0.5 |
(N)?Nitrogen : 0.24 - 0.32 |
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