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

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 .

   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 . 

Application :

1 . Petroleum

2 . Chemical industry

3 . Instrument

4 . Industrial transportation

5 . Mechanical structure industry

6 . Need high corrosion ability pipe's industry , such as offshore industry etc

Test :

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 )