S31803 / 2205 Duplex Steel Pipe With Annealed & Pickled Surface
S31803 / 2205 Duplex Steel Seamless Pipe, Big Size With Annealed & Pickled Surface
| UNS Designation | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| max | max | max | max | max | ||||||
| S31803 ( F51 ) | 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 ( F60 ) | 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 ( F53 ) | 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 ( F55 ) | 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 |
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 ) .
| 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 . |
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
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