ASTM A790/790M S31803 UNS S32750 Thin Wall Stainless Steel Tubing For Oil Industrial
Duplex Stainless Steel Pipe ASTM A790/790M S31803 UNS S32750 Size 1/8-72”
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
UNS32760(1.4501)
Chemical Composition
| Grade |
C max |
Si max |
Mn max |
P max |
S max |
Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
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 |
Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:
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| Standard | Chemical Composition | |||||||
| ASTM A240 | DIN | EN 10088-2 | JIS4305 | C% Max | Si% Max | Mn% Max | Cr% | Ni% |
| 201 | SUS201 | 0.15 | 1.00 | 7.50 | 16.00-18.00 | 3.50-5.50 | ||
| 202 | SUS202 | 0.15 | 1.00 | 10.00 | 17.00-19.00 | 4.00-6.00 | ||
| 304 | 1.4301 | X5CrNi18-10 | SUS304 | 0.08 | 1.00 | 2.00 | 18.00-20.00 | 8.00-10.50 |
| 304L | 1.4306 | X2CrNi19-11 | SUS304L | 0.03 | 1.00 | 2.00 | 18.00-20.00 | 8.00-12.00 |
| 309S | 1.4833 | X12CrNi23-13 | SUS309S | 0.08 | 1.00 | 2.00 | 22.00-24.00 | 12.00-15.00 |
| 310S | 1.4845 | X8CrNi25-21 | SUS310S | 0.08 | 1.00 | 2.00 | 24.00-26.00 | 19.00-22.00 |
| 316 | 1.4401 | X5CrNiMo17-12-2 | SUS316 | 0.08 | 1.00 | 2.00 | 16.00-18.00 | 10.00-14.00 |
| 316L | 1.4435 | X2CrNiMo17-12-2 | SUS316L | 0.03 | 1.00 | 2.00 | 16.50-18.50 | 10.00-14.00 |
| 317 | 1.4449 | SUS317 | 0.08 | 1.00 | 2.00 | 18.00-20.00 | 11.00-15.00 | |
| 317L | 1.4438 | X2CrNiMo18-15-4 | SUS317L | 0.03 | 1.00 | 2.00 | 18.00-20.00 | 11.00-15.00 |
| 321 | 1.4541 | X6CrNiTi18-10 | SUS321 | 0.08 | 1.00 | 2.00 | 17.00-19.00 | 9.00-12.00 |
| 347 | 1.4550 | X6CrNiNb18-10 | SUS347 | 0.08 | 1.00 | 2.00 | 17.00-19.00 | 9.00-12.00 |
| Technique: Cold drawn | ||||||||
| Size: diameter 1mm-480mm, thickness 0.1mm-4mm, length 1000mm-12000mm | ||||||||
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Application: Fluid transportation, machinery, automobile, bicycle, furniture, decoration, mechanical components and structure parts etc.  |
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