|
| Brand Name: | YUHONG |
| Model Number: | A213/SA213 TP304L U-TUBE |
| MOQ: | 300 KGS |
| Price: | Negotiable |
| Delivery Time: | Depends on order quantity |
| Payment Terms: | T/T, L/C AT SIGHT |
A213/SA213 TP304L Bright Annealed U-Bend Tube Overview
A213/SA213 TP304L Bright Annealed U-bend tubes are high-performance stainless steel tubes manufactured to ASTM A213/ASME SA213 standards using TP304L material—an austenitic stainless steel with low carbon content. These tubes undergo a bright annealing process in a controlled atmosphere to achieve a smooth, reflective surface finish and enhanced corrosion resistance.
The U-bend shape is specifically designed for use in heat exchangers, condensers, and boilers, where fluid direction changes within a compact footprint. The combination of TP304L's excellent weldability and corrosion resistance makes these tubes ideal for high-temperature and corrosive environments in industries such as petrochemical, power generation, and marine engineering.
Chemical Composition of SS304L (UNS S30403)
|
Element |
Content (%) |
|---|---|
|
Carbon (C) |
≤ 0.035 |
|
Manganese (Mn) |
≤ 2.00 |
|
Phosphorus (P) |
≤ 0.045 |
|
Sulfur (S) |
≤ 0.030 |
|
Silicon (Si) |
≤ 1.00 |
|
Chromium (Cr) |
18.0 – 20.0 |
|
Nickel (Ni) |
8.0 – 12.0 |
|
Nitrogen (N) |
≤ 0.10 |
|
Iron (Fe) |
Balance |
Mechanical Properties of SS304L (UNS S30403)
| Property | Value |
|---|---|
| Tensile Strength (min) | 485 MPa (70 ksi) |
| Yield Strength (min) | 170 MPa (25 ksi) |
| Elongation (min) | 35% |
| Hardness (max) | 90 HRB (Rockwell B) |
| Modulus of Elasticity | ~193 GPa (28 × 10⁶ psi) |
| Density | 8.0 g/cm³ |
| Melting Point | ~1400–1450 °C (2550–2640 °F) |
1. Key Features
Material: TP304L (UNS S30403) – low carbon version of 304 stainless steel
Process: Seamless, cold-worked, and bright annealed
Finish: Bright, smooth, oxide-free internal and external surface
Bend Radius: Customizable (typically 1.5×OD, 2×OD, etc.)
Standards: ASTM A213 / ASME SA213
Size Range: OD 6–38 mm; WT 0.5–3.0 mm; Lengths up to 30 meters (straight) before bending
2. Why Choose Bright Annealed (BA) tubes instead of Pickled Annealed (PA) tubes?
Choose Bright Annealed tubes when:
You need high surface quality and cleanliness
Corrosion resistance is a priority in critical environments
Applications demand tight tolerances and aesthetics
Pickled annealed tubes are fine for more general-purpose industrial applications where surface finish isn't as critical.
3. Advantages
Superior corrosion resistance, especially in chloride and acidic environments
Smooth internal surface enhances fluid flow and reduces scaling
High dimensional accuracy and mechanical strength
Suitable for high-purity and high-temperature applications
4. Applications
Heat exchangers
Condensers
Boilers and superheaters
Power generation and petrochemical plants
Pharmaceutical and food processing equipment
