| Standard: | ASTM A789 | Size: | NPS 1/2′ To 24′ WT:SCH10S， 40S， 80S， 100， 120， 160， XS， XXS |
|---|---|---|---|
| Testing: | ET， UT， HT ， FE CONTENT， PREN ， PT | W.T.: | 3mm To 100mm |
| High Light: | duplex steel pipes， welded steel pipe | ||
ASTM A789 UNS32205 Duplex Stainless Steel For Oil Gas Marine
TONG CHUANG GROUP deal with Austenitic Stainless Steel， Nickel Alloy Steel(Hastelloy ， Monel， Inconel， Incoloy ) seamless and welded pipe and tube already more than 30 years， every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 45 countries， Like Italy， UK， Gernmany， USA， Canada， Chile， Colombia， Saudi Arabia， Korea， Singapore， Austrial， Poland， France ， ….And our group branch company and factory have been already approved by :ABS， DNV， GL， BV， PED 97/23/EC， AD2000-WO， GOST9941-81， CCS， TS， CNNC， ISO9001-2008， ISO 14001-2004.
Chemical Composition Of ASTM A789 UNS32205
| 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 |
| 2205 (UNS S32205) | Min Max | – 0.030 | – 2.00 | – 1.00 | – 0.030 | – 0.020 | 22.0 – 23.0 | 3.0 – 3.5 | 4.5 – 6.5 | 0.14 – 0.2 |
Physical Properties Of ASTM A789 UNS32205
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C ( J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| UNS S32205 / 2205 | 782 | 190 | 13.7 | 14.2 | – | 19 | – | 418 | 850 |
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
Some of the quality tests carried out by us includes:
| 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 |
Characteristic of ASTM A789 UNS32205
Resistant to chloride stress corrosion cracking
Resistant to chloride pitting and crevice corrosion
Good corrosion resistance
Good resistance to corrosion
High strength
