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Built to last, this pipe is made from top-quality materials and is engineered to meet or exceed ASTM A312 TP304 Stainless Steel Pipe and ASME SA312 UNS S30400 Pipes standards. From its seamless construction to its corrosion-resistant properties, everything about this pipe is designed to withstand even the toughest conditions.
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The 304 stainless steel pipe is extensively utilized as a chromium-nickel stainless steel pipe. It encompasses both the SS 304 seamless and welded variants. With its excellent corrosion resistance, heat resistance, low-temperature strength, and mechanical properties, 304 stainless steel is highly revered. Not only does it showcase admirable corrosion resistance in atmospheric conditions, but it also boasts exceptional processing performance and weldability. Due to these remarkable characteristics, SS 304 pipes find applications in various industries such as oil, gas, shipping, households, construction materials, chemicals, and food. Amongst all the stainless steel pipes available, the ASTM A312 TP304 pipe stands out as an incredibly cost-effective option, making it the most popular choice worldwide.
The standard and properties of ASTM A312 TP304 stainless steel pipe are essential knowledge for anyone in the industry. Understanding this information can help you make informed decisions about which stainless steel pipe to use for your particular application.
ASTM A312 is the standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. This particular standard covers pipes made from materials such as TP304, TP304L, TP316, TP316L, and a few more.
TP304 is a grade of austenitic stainless steel that is commonly used in the manufacturing of piping systems. It is known for its excellent corrosion resistance and high strength, making it a popular choice for a variety of applications, including food processing, petrochemical, and pharmaceuticals.
In terms of properties, ASTM A312 TP304 stainless steel pipe is known for its superior corrosion resistance, excellent formability, and high strength. It is also resistant to a wide range of chemicals and high temperatures, making it a suitable choice for high-pressure applications.
In summary, ASTM A312 TP304 stainless steel pipe is an essential component in many industrial applications due to its superior properties and ASTM standard compliance. Understanding its standard and properties is crucial in selecting the right pipe for your specific needs.
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The ASTM A312 is a widely recognized standard for seamless, welded, and heavily cold worked austenitic stainless steel pipes. This specification sets the requirements for material composition, mechanical properties, dimensions, and testing procedures for pipes used in various industries. The ASTM A312 standard is applicable to pipes with diameters ranging from 1/8 inch to 30 inches and wall thickness from schedule 5 to schedule 160. The specification covers grades of austenitic stainless steel, such as 304, 304L, 316, and 316L, that are commonly used in piping systems for chemical, petrochemical, and other high-temperature applications. The standard ensures that the pipes meet the highest level of quality and performance standards to ensure safe and efficient operation.
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The 304 stainless steel pipe is a highly sought-after material due to its remarkable properties. This type of pipe boasts excellent resistance to corrosion, making it an ideal choice for applications in harsh or corrosive environments. What's more, it can endure high temperatures of up to 1700°F (927°C) without succumbing to deformation or cracking, making it especially useful in chemical processing and petroleum pipelines. Besides its durability, 304 stainless steel pipes also offer good strength and reliability, making them a popular option for medical equipment manufacturing. Overall, 304 stainless steel pipes are a versatile and sturdy choice for various industrial and commercial purposes.
ASTM A312 TP304 Stainless Steel Pipe Specifications
| Specifications | ASTM A 312/ASME SA 312 |
| Dimensions | ASTM, ASME and API |
| SS 304 Pipes | 1/2″ NB – 16″ NB |
| ERW 304 Pipes | 1/2″ NB – 24″ NB |
| EFW 304 Pipes | 6″ NB – 100″ NB |
| Size | 1/8″NB TO 30″NB IN |
| Schedule | In the world of pipe fitting, there are various schedules to consider when selecting the appropriate pipe for a project. These schedules range from SCH5 to XXS and include other options such as SCH10, SCH20, SCH30, SCH40, STD, SCH60, SCH80, XS, SCH120, SCH140, and SCH160. Each schedule represents a different wall thickness and weight for the pipe, allowing for a more customized fit depending on the demands of the job. So, whether you're working on a small residential project or a large commercial venture, it's crucial to select the correct pipe schedule to ensure a successful outcome. |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | We offer a wide variety of pipes to suit your needs. Our range includes round pipes, custom pipes, square pipes, rectangular pipes, "U" shape pipes, and hydraulic pipes. No matter what type of pipe you require, we have got you covered. Whether you are looking for standard dimensions or require custom sizes, we can accommodate your specifications. Our pipes are made with high-quality materials to ensure durability and longevity. Don't compromise on quality when it comes to pipes - choose our reliable and efficient solutions for all your piping needs. |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
ASME B36.19 provides a dimension chart for 304 stainless steel pipe. Here is a rearranged version of the original information:
For 304 stainless steel pipes, the ASME B36.19 standard offers a comprehensive dimension chart. This chart outlines the various dimensions and sizes available for these pipes. It is essential to consult this chart when considering the dimensions of the 304 stainless steel pipes you require for your project.
The dimension chart includes information such as the nominal pipe size (NPS), which represents the approximate inside diameter of the pipe, and the schedule, which indicates the wall thickness. The ASME B36.19 standard provides a range of sizes for both NPS and schedules, allowing you to select the most suitable dimensions for your specific application.
Additionally, the dimension chart lists the outside diameter (OD) of the pipes, allowing for accurate measurements and compatibility with fittings and connectors. This information is crucial for ensuring a proper fit and efficient flow within your piping system.
The chart also includes the weight per foot of the 304 stainless steel pipes, enabling you to calculate the overall weight of your piping system and make necessary considerations for installation and support requirements.
By following the specifications provided in the dimension chart, you can ensure that your 304 stainless steel pipes meet the required standards and align with your project's specifications. It is important to note that other industry standards and regulations may also apply, so it is advisable to consult with experts or refer to additional resources for a comprehensive understanding of your specific requirements.
In conclusion, the dimension chart outlined in ASME B36.19 serves as a valuable guide for selecting the appropriate dimensions and sizes of 304 stainless steel pipes. Proper consideration of these dimensions is crucial to the success and functionality of your piping system.
| DN | NPS | OD(mm) outside diameter |
Sch5S | Sch10S | Sch40S | Sch80S | Sch160S |
| 6 | 1/8 | 10.3 | - | 1.24 | 1.73 | 2.41 | 3.15 |
| 8 | 1/4 | 13.7 | - | 1.65 | 2.24 | 3.02 | 3.68 |
| 10 | 3/8 | 17.1 | - | 1.65 | 2.31 | 3.2 | 4.01 |
| 15 | 1/2 | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 | 4.78 |
| 20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 | 5.56 |
| 25 | 1 | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 | 6.35 |
| 32 | 1 1/4 | 42.2 | 1.65 | 2.77 | 3.56 | 4.85 | 6.35 |
| 40 | 1 1/2 | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 | 7.14 |
| 50 | 2 | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 | 8.74 |
| 65 | 2 1/2 | 73 | 2.11 | 3.05 | 5.16 | 7.01 | 9.52 |
| 80 | 3 | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 | 11.13 |
| 90 | 3 1/2 | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 | - |
| 100 | 4 | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 | 13.49 |
| 125 | 5 | 141.3 | 2.77 | 3.40 | 6.55 | 9.53 | 15.88 |
| 150 | 6 | 168.3 | 2.77 | 3.40 | 7.11 | 10.97 | 18.26 |
| 200 | 8 | 219.1 | 2.77 | 3.76 | 8.18 | 12.7 | - |
| 250 | 10 | 273.1 | 3.40 | 4.19 | 9.27 | 12.7 | - |
| 300 | 12 | 323.9 | 3.96 | 4.57 | 9.53 | 12.7 | - |
| 350 | 14 | 355.6 | 3.96 | 4.78 | 9.53 | 12.7 | - |
| 400 | 16 | 406.4 | 4.19 | 4.78 | 9.53 | 12.7 | - |
| 450 | 18 | 457 | 4.19 | 4.78 | 9.53 | 12.7 | - |
| 500 | 20 | 508 | 4.78 | 5.54 | 9.53 | 12.7 | - |
| 550 | 22 | 559 | 4.78 | 5.54 | - | - | - |
| 600 | 24 | 610 | 5.54 | 6.35 | 9.53 | 12.7 | - |
| 650 | 26 | 660 | - | - | - | - | - |
| 700 | 28 | 711 | - | - | - | - | - |
| 750 | 30 | 762 | 6.35 | 7.92 | - | - | - |
304 stainless steel pipe is a general-purpose stainless steel pipe widely used in the production of equipment and parts that require good overall performance of corrosion resistance and formability. ASME SA312 UNS S30400 pipes have excellent corrosion resistance and good resistance to intergranular corrosion, and also have good corrosion resistance to alkaline solutions and most organic and inorganic acids. DIN 1.4301 stainless steel pipes also have strong mechanical properties, the minimum yield strength of SS UNS S30400 ERW pipe is 205MPa, and the minimum tensile strength is 515MPa. HT PIPE supplies TP304 seamless stainless steel pipes and stainless steel welded pipes conforming to ASTM A312, ASME SA312 material standards, various types (SS 304 square pipe, 304 stainless steel round pipe, etc.), customized sizes (SS 304 SCH 10 pipe, SS 304 SCH40 pipe, etc.).
Stainless Steel 304 Pipes Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | AFNOR | EN |
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | Z7CN18-09 | X5CrNi18-10 |
Chemical Composition of ASME SA312 UNS S30400 Pipes
| Element | SS 304 |
| C | 0.08 max |
| Mn | 2 max |
| Si | 0.75 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 18 – 20 |
| Ni | 8 – 11 |
DIN1.4301 Stainless Steel Pipes Mechanical & Physical Properties
| Element | SS 304 |
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | PSI– 75000 , MPA – 515 |
| Yield Strength (0.2%Offset) | PSI – 30000 , MPA– 205 |
| Elongation | 35 % |
| Rockwell B (HR B) max | 201 |
304 Stainless Steel Seamless Pipe VS 304 Stainless Steel Welded Pipe
1. The production process is different: 304 stainless steel seamless pipe is made by piercing steel ingots or solid tube billets and is produced by hot rolling, cold drawing or cold rolling, without welds. The 304 stainless steel welded pipe is produced by the welding process. It needs to go through the processes of steel strip curling, welding, and annealing. There are welds on the surface, which can produce large-diameter pipes.
2. Different toughness and strength: Stainless steel 304 seamless pipe has no welds on the surface, stronger pressure bearing capacity, higher toughness and strength, and is suitable for working environments with high temperature, high pressure, and corrosive media. While the toughness and strength of SS 304 EFW pipe are slightly inferior to seamless pipes, but it has good corrosion resistance and formability.
3. Different application ranges: due to the relatively high strength of SUS 304 seamless pipe, it is suitable for working environments that need to withstand high temperatures, high pressure, and corrosive media, such as chemical industry, petroleum, metallurgy and other industries. UNS S30400 welded pipe is suitable for construction, decoration, food processing, and other industries due to its good corrosion resistance and formability.
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