Adinox Overseas is a well-established manufacturer, exporter, and supplier of top-quality Stainless Steel 347 Tubes, specifically designed to provide exceptional performance in corrosive and high-temperature service conditions. Stainless Steel 347, also known as UNS S34700, is a columbium (niobium) stabilized austenitic stainless steel that was designed to achieve improved resistance against intergranular corrosion. It is most commonly used for applications under constant exposure to high temperatures in which precipitation of carbide is a factor of concern.
We supply SS 347 Tubes both in welded and seamless forms as per international standards like ASTM A213 and ASTM A269. The tubes are recognized for their excellent resistance to oxidation, creep resistance, and thermal stability and are used in power plants, petrochemical processing, aerospace, pharmaceutical, and the paper and pulp industries.
The columbium addition to Stainless Steel 347 seamless pipes serves as a stabilizer, which protects against precipitation of the chromium carbide during exposure to high temperatures. Such a property enables the material to be resistant to corrosion and mechanical strength in long term exposure to heat, as compared to non-stabilized grades like 304. Due to the excellent formability and weldability, the material is widely used in fabrication applications demanding superior integrity and durability.
Our UNS S34700 Tubes are highly resistant to a broad spectrum of corrosive conditions such as acetic, nitric, and phosphoric acids. They are applicable in both reducing and oxidized conditions, rendering them a superior product for exhaust manifolds, catalytic converters, and thermal oxidizers. The tubes are also very strong and ductile in sub-zero temperatures, extending their application in cryogenic procedures.
Adinox Overseas exports ASTM A213 TP347 Tubes in the exact lengths, diameters, schedules, and wall thickness as required by your design and operational purpose. We can deliver our tubes to you with plain, beveled, or threaded ends and with any desired surface finishes like polished, bright annealed, or pickled. From the very light-wall tubing required for instrumentation up to the heavy-wall tubing for containment under pressure, we can provide precision-engineered solutions as per your project demands.
| Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 |
|---|---|
| Dimensions | ASTM, ASME and API |
| 347 Pipes & Tubes | 1/2" NB - 16" NB |
| ERW 347 Pipes & Tubes | 1/2" NB - 24" NB |
| EFW 347 Pipes & Tubes | 6" NB - 100" NB |
| Size | 1/8″NB TO 30″NB IN |
| Specialized in | Large Diameter Size |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
| Grade | Phosphorous | Manganese | Carbon | Silicon | Nickel | Molybdenum | Sulphur | Chromium | |
|---|---|---|---|---|---|---|---|---|---|
| SS 347 Pipe | Minimum | 9.0 | 2.00 | 17.0 | |||||
| Maximum | 0.045 | 2.0 | 0.08 | 1.00 | 13.0 | 3.00 | 0.030 | 20.0 | |
| Grade | Yield Strength | Elongation | Tensile Strength | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) | Brinell (HB) | ||||
| SS 347 Pipe | 205 | 40 | 515 | 95 | 201 |
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