If you are looking for corrosion-resistant stainless steel welded tubing for high-efficiency heat exchanger systems, we offer ASTM A249 TP304 Stainless Steel Welded Tubes for Heat Exchangers, specifically designed for heat exchanger tube bundles in the chemical, pharmaceutical, food processing, and energy industries.
Our ASTM A249 TP304 welded tubes undergo precision welding, pickling, and solution annealing, resulting in a smooth surface and uniform wall thickness. Available in diameters ranging from 6mm to 168.3mm, and lengths customizable to customer requirements, they are ideal for heat exchanger tube bundle manufacturing and customized systems. TP304 stainless steel boiler tubes offer excellent corrosion resistance, oxidation resistance, and long-term high-temperature stability, ensuring reliable performance in various media and operating conditions.
To guarantee product quality, each tube is provided with a Material Test Report (MTC), dimensional inspection, surface defect detection, and non-destructive testing (UT/PT), ensuring compliance with ASTM A249 standards and customer high-temperature operating requirements.
What is the difference between 304L and 304H tubing?
The difference between 304L and 304H tubing lies in their carbon content. 304L has a lower carbon content, with a maximum of 0.03%, while 304H has a higher carbon content, ranging from over 0.04% to 0.1%. Lower carbon content materials are more suitable for welding, while higher carbon content provides greater toughness. UNS S30403 stainless steel heat exchanger tubes can withstand temperatures up to 870 degrees Celsius under intermittent use conditions and up to 925 degrees Celsius under continuous use conditions.
Equivalent Grades:
| GRADE | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS304 | 1.4301 | S30400 | SUS304 | 304S31 | 08Х18Н10 | Z7CN18-09 | X5CrNi18-10 |
Chemical Composition:
| GRADE | UNS | Cr | S | Ni | C | Si | Mn | P |
| TP304 | S30400 | 18.0-20.0 | 0.03 | 8.0-11.0 | 0.08 | 1.0 | 2.0 | 0.045 |
ASTM A249 TP304L Mechanical Properties
| Grade | Tensile Strength (Mpa) | Yield Point (Mpa) | Elongation (%) |
|---|---|---|---|
| TP304L | 485 | 170 | 35 |
A249 TP 304 Superheater Tube Heat Treatment
| Process Of Heat Treatment | Temperature Range |
|---|---|
| Softening (Annealing) | 900 to 1000°C (1650 to 1830°F) |
| Stress Relieving | 650 to 750°C (1200 to 1380°F) |
| Solution Annealing (Austenitizing) | 1010 to 1120°C (1850 to 2050°F) |
| Post-Weld Heat Treatment (PWHT) | 650 to 750°C (1200 to 1380°F) |
Price Of ASME SA 249 Type 304 Welded Stainless Steel Tube
| Wall Thickness | Outside Diameter | Inside Diameter | Tube Length | Price in US $ |
|---|---|---|---|---|
| 0.035 | 1/8 | 0.055 | 6 Feet | US $69.33 |
| 0.049 | 1/8 | 0.027 | 6 Feet | US $76.08 |
| 0.028 | 1/8 | 0.069 | 6 Feet | US $57.78 |
| 0.02 | 1/8 | 0.085 | 6 Feet | US $51.68 |
| 0.083 | 1/4 | 0.084 | 6 Feet | US $73.20 |
| 0.035 | 3/16 | 0.118 | 6 Feet | US $45.21 |
| 0.049 | 3/16 | 0.09 | 6 Feet | US $57.41 |
| 0.065 | 1/4 | 0.12 | 6 Feet | US $49.14 |
Our ASTM A249 stainless steel pipes come with a factory warranty and third-party testing reports (such as eddy current testing, hydrostatic testing, chemical composition analysis, and corrosion testing) before shipment, ensuring that each welded pipe meets dimensional accuracy (OD tolerance ±0.10 mm, wall thickness tolerance ±10%).
Types Of SA 249 304 SS Tube
Packaging and Marking:
The products shall be packaged in bundles or plywood crates, wrapped in plastic, and protected with appropriate measures to ensure seaworthy transportation or as required.
Markings shall conform to the requirements of specification A1016/A1016M and shall include, but not be limited to, whether the tubing is hot-worked or cold-worked, the standard, grade, size, heat number, and lot number.
