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Shanghai Toko Tech Co., Ltd. is a professional manufacturer and supplier of high-quality special alloy pipes and components. Its 304L seamless coiled tubing is a versatile and widely used product known for its excellent corrosion resistance, formability, and cost-effectiveness.
Key Features & Advantages:
Good General Corrosion Resistance: Offers excellent resistance to a wide range of atmospheric environments and many corrosive media, making it a versatile general-purpose austenitic stainless steel.
Low Carbon Content (L-Grade): The carbon content is controlled to a maximum of 0.03%, which minimizes the precipitation of chromium carbides during welding. This makes it ideal for welded applications where intergranular corrosion is a concern, without the need for post-weld annealing.
Excellent Formability and Weldability: Easy to form, fabricate, and weld into complex systems, allowing for flexible design and installation.
Seamless & Continuous Length: The seamless structure ensures higher integrity and pressure resistance compared to welded tubes. The long coiled length eliminates potential leak points at welds and simplifies installation in systems requiring long runs or bending around obstacles.
High-Quality Surface Finish: Produced through advanced cold drawing and bright annealing processes, resulting in a smooth, clean surface that minimizes friction and reduces the risk of contamination.
Typical Specifications (Customizable):
Material Grade: UNS S30403 / EN 1.4307 / ASTM A269 TP304L
Outer Diameter (O.D.): φ3 mm ~ φ11 mm (Common range for coils)
Wall Thickness (W.T.): 0.5 mm ~ 1.0 mm (Varies with O.D.)
Coil Length: Several hundred meters per continuous coil (exact length depends on O.D. and W.T.)
Standard: ASTM A269, ASTM A213, etc.
| Austenitic Stainless Steels | ||||||||||
| ALLOY DESIGNATION | COMMON SPECIFICATIONS | |||||||||
| Grade | UNS | EN | EN | JIS | ASTM | ASME | AMS | MIL-T | BS/EN | others |
| 304 | S30400 | X5CrNi18-10 | 1.4301 | SUS304 | A213, A269, A312 | SA213, SA269, SA312 | 5636 | – | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 304L | S30403 | X2CrNi18-9 | 1.4307 | SUS304L | A213, A269, A312 | SA213, SA269, SA312 | – | – | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 304H | S30409 | X6CrNi18-10 | 1.4948 | SUS304H | A213, A312 | SA213, SA312 | – | – | BS EN 10216-5 | – |
| 316 | S31600 | X5CrNiMo17-12-2 | 1.4401 | SUS316 | A213, A269, A312 | SA213, SA269, SA312 | 5507, 5647 | MIL-T-6736 | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 316L | S31603 | X2CrNiMo17-12-2 | 1.4404 | SUS316L | A213, A269, A312 | SA213, SA269, SA312 | – | – | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 316Ti | S31635 | X6CrNiMoTi17-12-2 | 1.4571 | SUS316Ti | A213, A269, A312 | SA213, SA269, SA312 | – | MIL-T-6736 | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 321 | S32100 | X6CrNiTi18-10 | 1.4541 | SUS321 | A213, A269, A312 | SA213, SA269, SA312 | – | MIL-T-6736 | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 321H | S32109 | X12CrNiTi18-9 | 1.4878 | – | – | – | – | – | BS EN 10216-5 | – |
| 347 | S34700 | X6CrNiNb18-10 | 1.455 | SUS347 | A213, A269, A312 | SA213, SA269, SA312 | – | MIL-T-6736 | BS 970 Pt. 4, BS EN 10216-5 | DIN 17458 |
| 347H | S34709 | X7CrNiNb18-10 | 1.4912 | – | – | – | – | – | BS EN 10216-5 | – |
Primary Applications:
This tubing is suitable for a broad range of applications across various industries, including:
Food and Beverage Processing: Equipment and piping for brewing, dairy, and other food handling where cleanliness and corrosion resistance are required.
Pharmaceutical and Biotech: Process lines for high-purity water and other fluids.
General Chemical Processing: Handling mild corrosive chemicals and solvents.
Architectural and Decorative: For handrails, fluid systems in buildings, and other applications where aesthetics and corrosion resistance are important.
Automotive: For various fluid lines and sensors.
Heat Exchangers and Instrumentation: Pressure gauge tubes and other instrumentation applications.
Why Choose TOKO TECH’s 304L Coiled Tubing?
TOKO TECH ensures consistent quality through strict process control from raw material selection to final packaging. The production process typically includes 100% eddy current testing (ET) or ultrasonic testing (UT) to ensure integrity, followed by hydrostatic testing to verify pressure rating. The coils are often protected with VCI (Vapor Corrosion Inhibitor) packaging or other anti-rust methods to prevent corrosion during transit and storage.
In summary, TOKO TECH’s 304L seamless coiled tubing provides a reliable and cost-efficient solution for applications requiring good corrosion resistance, ease of fabrication, and the convenience of long, continuous lengths. It is a fundamental material for engineers designing systems for a wide array of industrial and commercial uses.