ASTM A249/ASME SA249 TP304/304L 1.4301/1.4307 STAINLESS STEEL BRIGHT ANNEALED WELDED HEAT EXCHANGER TUBE
Overview:
TP304/304L bright annealed welded tubes primarily consist of iron (Fe) as the base metal, with the addition of chromium (Cr) and nickel (Ni). This alloy composition provides TP304/304L stainless steel with its exceptional corrosion resistance, even in aggressive environments.
They can withstand a wide range of environments, including acids, alkalis, and chloride-containing solutions, making them suitable for applications in industries such as chemical processing and petrochemical. TP304/304L bright annealed welded tubes undergo a specialized bright annealing process, which involves heating the tubes to a high temperature followed by rapid cooling in a controlled atmosphere. This treatment not only enhances the tube's surface finish but also improves its mechanical properties, such as ductility and hardness.
The bright annealing treatment results in a polished and smooth surface finish for TP304/304L welded tubes, providing an aesthetically appealing appearance. The bright surface finish also facilitates easy cleaning and maintenance, making it suitable for applications where hygiene and visual appeal are important, such as in food processing or pharmaceutical industries.
TP304/304L bright annealed welded tubes exhibit favorable mechanical properties, including good tensile strength, yield strength, and elongation. They offer excellent formability and can be easily fabricated into different shapes using standard metalworking techniques.
Specification:
| Standard | ASTM A249 & Its equivalent ASME, DIN & EN Standard |
| Grades | TP304/304L; 1.4301/1.4307 |
| Type | Straight welded tube |
| Outer Diameter | 1/4'' to 2'' or custom size |
| Wall Thickness | BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10 |
| Length | Upto 6 meters or custom cut lengths |
| Delivery Condition | Bright Annealed |
| Ends | Plain End, Beveled End |
| Other Testing | Product Analysis, Eddy Current Test, Hydrostatic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc. |
| Dimension | All Pipe & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Packing | Plywood case/Woven bag in bundle |
Chemical Composition:
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni |
| TP304 | S30400 | 0.08 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 18.0-20.0 | 8.0-11.0 |
| TP304L | S30403 | 0.03 max | 2.00 max | 0.045 max | 0.03 max | 1.00 MAX | 18.0-20.0 | 8.0-12.0 |
Mechanical Properties:
| Grade | UNS | Tensile Strength min, ksi (MPa) | Yield Strength
min, ksi (MPa) | Elongation in 2 in.
or 50mm, min (%) | Rockwell Hardness |
| TP304 | S30400 | 75(515) | 30(205) | 35 | 90HRB |
| TP304L | S30403 | 70(485) | 25(170) | 35 | 90HRB |
Applications:
1. Food and Beverage Industry: TP304 bright annealed welded tubes are widely used in food processing and beverage production. They are suitable for conveying food products, such as dairy, beverages, and liquid ingredients, due to their high corrosion resistance, hygienic surface finish, and compliance with industry standards for food contact materials.
2. Pharmaceutical Industry: TP304 bright annealed welded tubes are utilized in pharmaceutical manufacturing and laboratory settings. They are suitable for conveying and transferring sterile fluids, pharmaceutical ingredients, and chemicals. The smooth and polished surface finish of these tubes ensures easy cleaning, sterilization, and enhanced product integrity.
3. Sanitary Piping Systems: TP304 bright annealed welded tubes are commonly used in sanitary piping systems for industries with strict hygiene requirements, such as dairy processing, breweries, and cosmetics. Their corrosion resistance and smooth surface finish facilitate easy cleaning, reduce the risk of contamination, and maintain product integrity.
4. Chemical Processing: TP304 bright annealed welded tubes find application in chemical processing plants. They are employed for conveying corrosive chemicals, acids, and aggressive fluids. The high corrosion resistance of TP304 stainless steel ensures the tubes can withstand the challenging chemical environments encountered in the industry.
5. Heat Exchangers and Condensers: TP304 bright annealed welded tubes are suitable for heat exchange applications in various industries. They can be used in heat exchangers, condensers, and cooling systems where efficient heat transfer, corrosion resistance, and high-temperature performance are required, such as in HVAC systems, power plants, and refrigeration units.
6. Oil and Gas Industry: TP304 bright annealed welded tubes have applications in the oil and gas industry. They can be used for conveying fluids, gases, and corrosive media in pipelines, offshore platforms, petrochemical plants, and refineries. The high corrosion resistance and durability of TP304 stainless steel make these tubes suitable for the demanding conditions of the industry.
7. Automotive and Transportation: TP304 bright annealed welded tubes may find application in the automotive and transportation sectors. They can be used in components such as fuel lines, exhaust systems, and hydraulic systems, where corrosion resistance and durability are essential.
Product Tags:
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ASTM A249 / ASME SA249 TP304/304L 1.4301/1.4307 STAINLESS STEEL BRIGHT ANNEALED WELDED HEAT EXCHANGER TUBE Images
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