Overview
Super Duplex 2507 Seamless Pipes offers greater corrosion resistance as well as increased strength as compared to the Duplex version, especially because of the presence of additional molybdenum, chromium and nitrogen content. We have Super Duplex S32750 Seamless Pipes which are used in offshore platforms, heat exchangers mechanical and structural components along with other seawater piping and chemical processing industries.
Specification
ASTM A790/A790M-20 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
Specifications | ASTM A 790 ASME SA 790 |
Standards | ASTM, ASME, and API |
Size | 1/8″NB TO 30″NB IN |
Schedule | SCH20, SCH30, SCH40, STD, SCH80 |
Type | Seamless / ERW / Welded / Fabricated |
Form | Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, “U” Shape, Hydraulic Pipes |
Length | Single Random, Double Random & Cut Length. |
End | Plain End, Beveled End, Treaded |
Equivalent Grades:
Grade | UNS No | WERKSTOFF NR. |
Super Duplex S32750 | S32750 | 1.4410 |
Chemical Composition
Grade | C | Si | Mn | P | S | 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 |
Mechanical Properties
Grade | Density | MeltingPoint | Yield Strength | Tensile Strength | Elongation |
|---|---|---|---|---|---|
S32750 | 7.8 g/cm3 | 1350 °C | Psi – 80000 , | Psi – 116000 , | 15% |
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 |
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 | 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:
|
|
|
Applications
- 1. Chemical processing, Transport and Storage.
- 2. Oil and gas exploration and offshore rigs.
- 3. Oil and gas refining.
- 4. Marine environments.
- 5. Pollution control equipment.
- 6. Pulp and paper manufacturing.
- 7. Chemical process Plant.
