| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Oil and Gas Industry |
| Certification: | ISO9001 |
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304 stainless steel pipe is the most widely used chromium-nickel stainless steel pipe, including SS 304 seamless pipe and 304 stainless steel welded pipe. 304 stainless steel has good corrosion resistance, heat resistance, low-temperature strength and mechanical properties, corrosion resistance in the atmosphere, good processing performance, and weldability. SS 304 pipe is widely used in oil, gas, ships, household goods, building materials, chemicals, food industries, etc. ASTM A312 TP304 pipe is one of the most cost-effective stainless steel pipes in the market and these are also the most used stainless steel pipes in the world.
ASTM A312 TP304 stainless steel pipe standard and properties:
ASTM A312: Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
Properties: 304 stainless steel pipe has excellent corrosion resistance, can withstand high temperatures up to 1700°F (927°C), has good strength, is not easy to deform, and is not easy to crack. 304 stainless steel pipes are commonly used in applications such as chemical processing, petroleum pipelines, and medical equipment.
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 | SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH60, SCH80, XS, SCH120, SCH140, SCH160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Form | Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, "U" Shape, Hydraulic Pipes |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
Dimension Chart of 304 Stainless Steel Pipe (ASME B36.19)
| 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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