Products Description
Product Specifications
| Standards | JIS G3463 |
| Steel Grades | SUS304TB SUS304HTB SUS304LTB SUS309TB SUS309STB SUS310TB SUS310STB SUS312LTB SUS316TB SUS316HTB SUS316LTB SUS316TiTB SUS317TB SUS317LTB SUS321TB SUS321HTB SUS347TB SUS347,etc. |
| Equivalent Standards | ASTM A213 / A269, EN 10216-5 |
| Outer Diameter (OD) | 6 mm – 630 mm |
| Wall Thickness (WT) | 0.5 mm – 55 mm |
| Length | 6/9/12 m, customized |
| Surface Treatment | Pickling and annealing |
| Production Process | Cold-rolled / Cold-drawn |
| Condition | Solution Annealed |
JIS G3463 stainless steel tube is manufactured using seamless forming processes such as hot extrusion and cold drawing, ensuring dimensional precision: an outer diameter tolerance of ±0.10 mm, wall thickness uniformity with a deviation of ≤3%, and straightness of ≤1.5 mm/m.
Produced from high-temperature-specific grades (SUS304HTB/SUS316HTB) and optimized through specialized heat treatment, these tubes support maximum operating temperatures of 650°C and pressures of 16 MPa. They offer exceptional resistance to high temperatures and pressures, making them suitable for long-term heat exchange applications under such demanding conditions.
Customized Services
- TORICH offers customization for outer diameters ranging from 6mm to 630mm and wall thicknesses from 0.5mm to 55mm, supplying tubes in extra-long fixed lengths or cut-to-length pieces.
- We provide surface treatments including pickling and passivation, bright annealing, and electropolishing of inner surfaces for high-purity systems.
- Customized tube-end processing services are available, including plain ends, beveled ends, threaded ends, and flanging.
- We offer U-bending services, precisely cold-bending U-tube bundles according to drawings while strictly controlling wall thinning and roundness to ensure assembly accuracy for heat exchangers.
Chemical Composition
| Element | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Ni (%) | Cr (%) | Mo (%) | Nb/Ti (%) |
| SUS304LTB | 0.03 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00–13.00 | 18.00–20.00 | – | – |
| SUS309TB | 0.20 | 1.00 | 2.00 | 0.045 | 0.030 | 12.00–15.00 | 22.00–24.00 | – | – |
| SUS310STB | 0.08 | 1.50 | 2.00 | 0.045 | 0.030 | 19.00–22.00 | 24.00–26.00 | – | – |
| SUS347TB | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00–13.00 | 17.00–19.00 | – | Nb: ≤1.00 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| SUS304LTB | ≥480 | ≥175 | ≥40 | 90 |
| SUS309TB | ≥520 | ≥205 | ≥40 | 95 |
| SUS310STB | ≥520 | ≥205 | ≥40 | 95 |
| SUS347TB | ≥520 | ≥205 | ≥40 | 95 |
Possible Alternative Grades
- For applications with mild chloride ion exposure and weak corrosive media, SUS316LTB can be selected instead of SUS304LTB. Although more expensive, its pitting resistance equivalent (PREN) increases from approximately 18 to ≥24.
- For demanding applications requiring cyclic heating above 1000°C or facing repeated oxidation and scaling, SUS310STB is preferable to SUS309TB. Its higher chromium-nickel content provides better resistance to high-temperature corrosion.
- For corrosion from sulfur-containing or vanadium-containing combustion products, and extreme temperatures >1100°C, Incoloy 800H/HT can be chosen instead of SUS310STB, offering superior high-temperature performance.
- If high-temperature performance is required but the work hardening tendency of niobium is to be avoided, SUS321TB can be used instead of SUS347TB. It is suitable for heat exchangers, boiler systems, and steam condensers in power plants.
application areas
Thanks to their excellent thermal conductivity, corrosion resistance, and ability to withstand high temperatures and pressures, the JIS G3463 stainless steel tube is widely used in the core components of various shell-and-tube heat exchangers across multiple industrial sectors:
- Petrochemical Industry: Chemical reaction heat exchangers, refinery heating and cooling equipment, heat exchange units for acidic and alkaline media, and petrochemical pipeline heat exchange systems
- Power Generation: Steam condensers, feedwater heaters, turbine auxiliary cooling systems, etc.
- Marine & Offshore: Seawater cooling heat exchangers for ships, heat exchange equipment for offshore platforms, and heat exchange tubes for seawater desalination
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: Is JIS G3463 SUS304TB equivalent to ASTM A213 TP304?
A: They are chemically equivalent and have similar mechanical properties and can be used interchangeably. We offer dual-certified tubing to meet engineering requirements across different regions.
Q: What is the maximum custom length for the tubing?
A: Standard fixed lengths are 6, 9, and 12 meters, with a maximum custom length of up to 19 meters per piece. This accommodates the assembly of full-length tubes for large shell-and-tube heat exchangers, thereby reducing the need for intermediate welded joints.
Q: What inspections are performed before the tubes leave the factory?
A: We strictly conduct pre-delivery inspections, including dimensional checks, spectral analysis of chemical composition, tensile testing, and 100% hydrostatic testing or online eddy current testing (ET). Hardness, flattening, flaring, and intergranular corrosion tests can also be provided upon request.
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