ASTM A312 TP304L seamless stainless steel pipe is ideal for water treatment due to its excellent corrosion resistance and low carbon content (effectively preventing intergranular corrosion). It possesses good mechanical strength, toughness, and weldability, and performs well in both low-pressure and high-temperature applications. Its main advantage for water treatment lies in its ability to withstand a variety of corrosive media and atmospheric environments; however, it should be noted that it may be susceptible to pitting corrosion in warm chloride environments.
What are the specifications for 304 stainless steel seamless pipe?
ASTM A312 TP304 stainless steel pipe is suitable for high-pressure, high-temperature environments due to its high operating temperature (up to 870 degrees Celsius) and strength. The minimum yield strength of 304 stainless steel pipe (UNS S30400 ERW) is 205 MPa, and the minimum tensile strength is 515 MPa.
ASTM A312 TP304L (UNS S30403) Stainless Steel Seamless Tubes for Water Treatment
ASTM A312 TP304L is a low-carbon austenitic stainless steel. ASTM A312 TP304L stainless steel tubes have an excellent nickel-chromium content, enhancing their corrosion resistance and oxidation resistance. These tubes are also stronger and suitable for high-temperature applications.
ASTM A312 TP304L stainless steel seamless tubes possess numerous superior properties, such as: good corrosion resistance, prevention of product contamination, oxidation resistance, excellent formability, high strength and lightweight, and good strength and toughness at low temperatures.
304L Tube Specification:
| ASTM A312 / ASME SA312 | |
| 1/2" To 48" | |
| SCH 5 To SCH XXS | |
| 6M Or As Custom, Single Random, Double Random , Standard & Cut length |
304L Tube Equivalent Grades:
| WERKSTOFF NR. | ||||||||
| SS 304L |
X2CrNi18-9 / X2CrNi19-11
|
S30403 | SUS 304L | Z3CN18‐10 | 304S11 | 1.4306/1.4307 | 03Х18Н11 | 2332 |
304L Tube Chemical Composition:
| C | P | S | ||||||
| TP304L | min. | - | - | - | 18 | - | - | 8 |
| max. | 1 | 0.03 | 2 | 20 | 0.045 | 0.03 | 12 | |
304L Tube Mechanical Properties:
min. MPa [ksi] |
485 Mpa - 70 Ksi |
min. MPa [ksi] |
170 Mpa - 25 Ksi |
| Elongation, min, (% in 50mm) | 40% |
Chloride Susceptibility: While resistant to drinking water corrosion at ambient temperatures (chloride concentrations up to approximately 200 mg/L), pitting and crevice corrosion are prevalent in warm chloride environments, and stress corrosion cracking can occur above approximately 600℃.
Testing: Pipelines must undergo hydrostatic testing to ensure their strength and sealing. Other tests, such as eddy current testing, ultrasonic testing, or radiographic testing, can be performed upon request.
Surface Treatment: Finished pipes should have smooth, corrosion-resistant surfaces, such as those treated with pickling or bright annealing, which is beneficial for hygienic applications in water treatment.
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
