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Payment Type: L/C,T/T
Transportation: Ocean,Land,Air,Express
Model No.: ASTM A790 UNS S31803
Brand: YuHong Group
Standard: Astm
Section Shape: Round
Place Of Origin: China
Application: Gas Pipe, Oil Pipe, Hydraulic Pipe
Production Process: Cold Drawn
Special Tube: Thick Wall Pipe
Whether Alloy: Non-Alloy
Category: Seamless Steel Pipe
Product Name: Duplex Steel Seamless Pipe
Specification: ASTM A790
Material Grade: UNS S31803/DIN1.4462
Type: Seamless/Welded
NDT: ET, UT, HT, PT
Application: Industry, Oil And Gas
ASTM A790 UNS S31803(SAF2205)/1.4462 Duplex Steel Thick Wall Seamless Pipe
What is ASTM A790 S31803 material?
ASTM A790 UNS S31803 Seamless and SA 790 welded pipe supplier
ASTM A790 UNS S31803 is a specification in duplex steel material. The material is an alloy of steel with chromium and molybdenum in it. The addition of these materials makes the pipes stronger and much corrosion resistant. The SA 790 UNS S31803 one of the super duplex grades which is stronger and corrosion resistant.
The Advantages of Material S31803:
The main benefit of using duplex stainless steel alloys is that they have superior corrosion resistance properties amongst the other classes. Particularly, the stress related corrosion cracking properties of the duplex s31803 seamless pipe are welcome in industries that process both sulfide or chloride ions. Both sulfide and chloride ions, when deposited on the walls of conventional steel pipes tend to crack because their resistance to such corrosive ions is very little.
On the other hand, the ASTM A790 UNS S31803 Seamless Pipe (Seamless and Welded pipe) was specifically designed to combat issues related to stress corrosion cracking. Apart from being used in such conditions, the uns s31803 pipe suppliers recommend using the alloy as a solution to problems such as pitting, crevice corrosion. In fact, in very oxidizing and acidic solutions, the seamless s31803 pipe will exhibit exceptional resistance to pitting and crevice corrosion.
The PREN or pitting resistance equivalent value of these alloys is higher than alloys like 304 or stainless steel alloy 316. The UNS S31803 Duplex Steel Seamless Pipe exhibits excellent impact toughness even in low temperatures.
UNS S31803 Pipe Chemical Composition
| Grade |
| C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 2205 (UNS S31803) | Min Max | – 0.030 | – 2.00 | – 1.00 | – 0.030 | – 0.020 | 21.0 23.0 | 2.5 3.5 | 4.5 6.5 | 0.08 0.20 |
Mechanical Composition Of Duplex S31803 Semaless Pipe
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell C (HR C) | Brinell (HB) | ||||
| UNS S31803 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
ASME SA790 UNS S31803 Pipe Physical Properties
| Grade 2205 | Density | Elastic | Mean Co-eff of Thermal | Thermal | Specific | Electrical | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| UNS S31803 | 782 | 190 | 13.7 | 14.2 | – | 19 | – | 418 | 850 |
Equivalent ASTM Grade Of UNS S31803 Pipe
| Grade | ASTM | UNS | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | |||||
| 2205 | ASTM A790 | UNS S31803 | 318S13 | – | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
YUHONG Quality Tests:
| Corrosion Test | Conducted only when specially requested by the client |
| Chemical Analysis | Test done as per required quality standards |
| Destructive / Mechanical Testing | Tensile | Hardness | Flattening | Flare | Flange |
| Reverse-bend and Re. flat tests | Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end |
| Eddy Current Testing | Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
Supplementary Testing:
Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:
| Eddy Current Testing O.P Testing Radiography Testing | Corrosion Testing Micro Testing Macro Testing | IGC Testing Ultrasonic testing Liquid Penetrate testing |
Duplex Stainless Steel Pipe Application:
-Chemical processing, Transport and Storage.
-Oil and gas exploration and offshore rigs.
-Oil and gas refining.
-Marine environments.
-Pollution control equipment.
-Pulp and paper manufacturing
-Chemical process Plant
| Selling Units | : | Kilogram |
|---|---|---|
| Package Type | : | Ply Wooden Case with Plastic Caps |
Packaging: Ply Wooden Case with Plastic Caps
Productivity: 500Tons Per Month
Transportation: Ocean,Land,Air,Express
Place of Origin: China
Supply Ability: According to Client's Requirements
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
HS Code: 7304419000
Payment Type: L/C,T/T
Incoterm: FOB,CFR,CIF,EXW,DDU,Express Delivery
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.