ASTM A790 / ASTM SA790 S32205 / S31803 F51 Duplex Steel Pipe With
PE / BE End
Duplex stainless steel that was developed to combat common
corrosion problems encountered with the 300 series stainless steels
. “ Duplex ” describes a family of stainless steels that are
neither fully austenitic , like 304 stainless , nor purely ferritic
, like 430 stainless . The advantage of a duplex structure is that
it combines the favorable qualities of a ferritic alloy ( stress
corrosion cracking resistance and high strength ) with those of an
austenitic alloy ( ease of fabrication and corrosion resistance ) .
Use UNS32750 super duplex stainless steel pipes can improve
corrosion resistance compared to other materials . And super duplex
steel pipes have greater tensile and yield strength , good
ductility and yield strength , good stress corrosion cracking
resistance . Also can help clients reduce their purchase costs ,
but can gurantee the quality etc .
| Material Grade | S32205 , S31803 , S32304 , S32750, F51 , F53 , 2205 , 2507 etc |
| Outer Diameter | 10.3mm - 1219mm |
| Wall Thickness | 1.24mm - 54.59mm |
| Length | as per customer’s requirement |
| Standard | ASTM A789 ; ASTM A790 ; EN 10216-5ect . |
Price Item: FOB, CFR, CIF or as negotiation
Payment: T/T, LC or as negotiation
Delivery Time: 30 working days after received your deposit
(Normally according to the order quantity)
Package: Iron case; woven bag or as per customer’s requirement
Requirement: Mill Test Certificate will be supplied with shipment,
Third Part Inspection is acceptable
Quality Test: NTD(Ultrasonic test, Eddy Current test);
Mechanical Test(Tension Test, Flaring Test, Flattening Test,
Hardness Test, Hydraulic test);
Metal Test(Metallographic Analysis, Impact Test-High/low
temperature);
Chemical Analysis(Photoelectric Emission Spectroscopic)
Main Market: Europe, Middle East, Southeast Asia, South America.
Etc
| UNS Designation | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| max | max | max | max | max |
| S31803 | 0.03 | 1 | 2 | 0.03 | 0.02 | 21.0 - 23.0 | 4.5 - 6.5 | 2.5 - 3.5 | 0.08 - 0.20 | - |
| S32205 | 0.03 | 1 | 2 | 0.03 | 0.02 | 22.0 - 23.0 | 4.5 - 6.5 | 3.0 - 3.5 | 0.14 - 0.20 | - |
| S32750 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 5.0 | 0.24 - 0.32 | 0.5 max |
| S32760 | 0.05 | 1 | 1 | 0.03 | 0.01 | 24.0 - 26.0 | 6.0 - 8.0 | 3.0 - 4.0 | 0.20 - 0.30 | 0.50 -1.00 |
Application
a) Petroleum
b) Chemical industry
c) Instrument
d) Industrial transportation
e) Mechanical structure industry
f) Need high corrision ability pipe's industry, such as offshore
industry etc
Advantages
a) Superior surface finish,
b) Better mechanical property
c) More precise dimension
d) Perfect inspection method and inspection equipment
