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ASTM A269 specifies seamless and welded austenitic stainless steel tubing for general purposes, commonly referred to as TP304L or type 304L. This grade of stainless steel exhibits high corrosion resistance, excellent toughness, and good formability. The ASTM A269 TP304L tube is available in various sizes and wall thicknesses, and it can be either seamless or welded. It is a dependable and versatile choice for tubing applications where durability and resistance to corrosion are essential. With its wide range of properties, the 304L stainless steel tube finds utility in diverse industries and is well-suited for critical applications.
- The ASTM A269 is a standard specification that pertains to seamless and welded austenitic stainless steel tubing that is intended for general service. This specification outlines the requirements for various grades of stainless steel tubing that are used in a wide range of applications. The tubing is required to meet certain mechanical properties, such as strength, hardness, and ductility. It must also exhibit good resistance to corrosion and oxidation. The ASTM A269 covers both seamless and welded tubing, and it provides guidelines for manufacturing, finishing, testing, and inspection. Overall, this standard is essential in ensuring that stainless steel tubing meets the necessary quality and performance criteria.
- There are several grades of stainless steel that are commonly used in various applications. These grades include 304, 304L, 316, 316L, 316Ti, 316L Mod, 17-4ph, 310, 310S, 317, 317L, 321, 321H, 347, 347H, 904L, 254SMO, 253MA, S32550, S32205, S31803, 2507, S31050, S30815, and more.
Each grade has its unique properties that make it suitable for specific applications. For instance, 304 and 304L are commonly used in dairy, food, and brewing industries due to their excellent corrosion resistance properties and ease of fabrication. Meanwhile, 316 and 316L are widely used in marine, medical, and chemical industries due to their excellent corrosion resistance properties in harsh environments.
Additionally, other grades such as 316L Mod, 17-4ph, 310, 310S, and 317 are used in high-temperature applications due to their high-temperature strength and corrosion resistance properties. On the other hand, grades like 904L, 254SMO, and 253MA are used in harsh chemical environments due to their excellent corrosion resistance properties against organic and inorganic acids.
Lastly, duplex grades like S32550, S32205, S31803, and 2507 are used in applications that require a combination of excellent corrosion resistance and high strength properties. These grades are commonly used in oil and gas, chemical, and energy industries.
In summary, stainless steel grades play a vital role in determining the suitability of a material for specific applications. Therefore, it is essential to consider the properties of each grade to ensure optimal performance of the material in the target application.
- HT PIPE is a leading supplier and manufacturer of stainless steel 304L pipes and tubes. Our premium quality UNS S30403 stainless steel tubes have gained popularity not only in Indonesia, Malaysia, and India but also in several other countries. With our dedication to excellence and customer satisfaction, we have successfully established ourselves as experts in the industry. Whether you require our products for residential or commercial purposes, we guarantee exceptional performance and durability. Choose HT PIPE for all your stainless steel pipe and tube needs! We are here to serve you.

ASTM A269 TP304L Tube Specification
- The carbon content in S30403 stainless steel is lower compared to TP304, resulting in enhanced resistance to sensitization and intergranular corrosion. S30403 maintains a similar elemental composition to TP304, with 18% chromium and 8% nickel. By adjusting the carbon content, S30403 exhibits improved qualities to combat sensitization and intergranular corrosion, while retaining the fundamental composition of 18% chromium and 8% nickel found in TP304.
- Stainless steel pipes can be categorized into seamless and welded types. One specific example is TP304, which is covered by ASTM A269 and is commonly used for stainless steel tubes. When it comes to 304l stainless steel tubes, they can be either seamless or welded. The seamless tubes are manufactured from a solid billet, whereas the welded tubes are created by welding strips or plates together.
- ASTM A269 TP304L tubes come in various sizes, providing a wide range of options to meet different needs. The outside diameters (OD) of these tubes typically span from 0.25" (6.35mm) to 8" (203.2mm), offering flexibility in choosing the suitable size. Furthermore, the wall thickness can be adjusted as per specific requirements, allowing for customization and optimization based on the intended application.
- The ASTM A269 stainless steel 304L tubes come with a standard surface finish that has been annealed and pickled. This process effectively removes all the scale, heat tint, and other impurities from the surface of the tubes, resulting in a corrosion-resistant and smooth surface. Such a finish is why these tubes are ideal for use in a wide range of applications. So, if you're looking for high-quality stainless steel tubes, these are the perfect choice that you can rely on for lasting durability.
- If you're in need of a product that offers exceptional resistance to corrosion, then the TP304L stainless steel pipe is a suitable option. Its unique properties make it ideal for use in industries like chemical processing, food processing, pharmaceuticals, and high-purity sectors. Additionally, with its lower carbon content, the ASTM A269 type 304L tube is perfect for use in environments that may cause sensitization and intergranular corrosion. So if you're seeking a high-quality, reliable material that can withstand harsh conditions and resist corrosion, then the TP304L stainless steel pipe is the perfect choice for you.
304L Stainless Steel Tube Supplier
When purchasing ASTM A269 TP304L Stainless Steel Pipe, it is important to specify the desired dimensions, wall thickness, and any other requirements such as surface finish or specific testing needs. You can consult our 304L stainless steel tube supplier or manufacturer to make sure the tube fits your needs.
ASTM A269 TP304L Tube Dimensions
| DN | NPS | OD(in) | Sch5S (in) |
Sch10S (in) |
Sch40S (in) |
Sch80S (in) |
Sch160S (in) |
| 6 | 1/8 | 0.405 | - | 0.049 | 0.068 | 0.095 | 0.124 |
| 8 | 1/4 | 0.54 | - | 0.065 | 0.088 | 0.119 | 0.145 |
| 10 | 3/8 | 0.675 | - | 0.065 | 0.091 | 0.126 | 0.158 |
| 15 | 1/2 | 0.84 | 0.065 | 0.083 | 0.109 | 0.147 | 0.188 |
| 20 | 3/4 | 1.05 | 0.065 | 0.083 | 0.113 | 0.154 | 0.219 |
| 25 | 1 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 | 0.250 |
| 32 | 1 1/4 | 1.66 | 0.065 | 0.109 | 0.140 | 0.191 | 0.250 |
| 40 | 1 1/2 | 1.9 | 0.065 | 0.109 | 0.145 | 0.200 | 0.281 |
| 50 | 2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 | 0.344 |
| 65 | 2 1/2 | 2.875 | 0.083 | 0.120 | 0.203 | 0.276 | 0.375 |
| 80 | 3 | 3.5 | 0.083 | 0.120 | 0.216 | 0.300 | 0.438 |
| 90 | 3 1/2 | 4 | 0.083 | 0.120 | 0.226 | 0.318 | - |
| 100 | 4 | 4.5 | 0.083 | 0.120 | 0.237 | 0.337 | 0.531 |
| 125 | 5 | 5.563 | 0.109 | 0.13 | 0.258 | 0.375 | 0.625 |
| 150 | 6 | 6.625 | 0.109 | 0.13 | 0.280 | 0.432 | 0.719 |
| 200 | 8 | 8.625 | 0.109 | 0.148 | 0.322 | 0.500 | - |
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