ASTM A312/ ASTM A213/ASTM A269/ASTM A790 Seamless Stainless Steel Pipes
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If you are looking for ASTM A312 seamless stainless steel pipes for chemical pipelines, ASTM A213 seamless tubes for heat exchangers and boilers, ASTM A269 precision stainless steel tubes for clean industries, or ASTM A790 duplex stainless steel pipes for highly corrosive environments, choosing a reliable manufacturer is critical to ensuring project safety, service life and operating efficiency.
As a professional stainless steel supplier with more than 18 years of export experience, GNEE Stainless Steel provides a wide range of ASTM/ASME standard seamless stainless steel pipes and tubes for customers in chemical processing, oil & gas, power generation, marine engineering, food processing and pharmaceutical industries
Through strict raw material control, advanced seamless pipe production technology and complete inspection systems, GNEE ensures every pipe meets international standards including ASTM, ASME, EN and JIS requirements, helping global customers reduce procurement risks and improve project reliability.
Our Production Process
What is ASTM A312 stainless steel pipe?
ASTM A312 is the primary material specification for seamless, welded, and heavily cold-worked austenitic stainless steel pipes intended for high-temperature and general corrosive service. It covers common grades such as 304/304L and 316/316L, with pipe sizes ranging from 1/8 inch to 30 inches, and is suitable for chemical processing, oil refining, power generation, and general industrial piping systems.
What Is ASTM A213 Stainless Steel Seamless Pipe?
ASTM A213 is a standard specification for seamless ferritic and austenitic steel tubes with minimum wall thickness, designed for high-temperature and high-pressure applications such as boilers, superheaters, and heat exchangers. Manufactured via a solid steel billet piercing process, these tubes feature a seamless structure-free of longitudinal welds-with smooth inner walls and uniform structural integrity. The standard covers grades such as TP304, TP304L, TP316, TP316L, TP321, and TP347, with sizes ranging from 1/8 inch (nominal bore) to 5 inches (outside diameter) and customizable wall thicknesses.
What Is ASTM A269 Stainless Steel Pipe?
ASTM A269 is a standard specification for nominal-wall-thickness austenitic stainless steel tubing (including both seamless and welded types) intended for general corrosion-resistant, low-temperature, and high-temperature service. The standard covers common grades such as 304/304L and 316/316L. It is classified as a "tubing" standard rather than a heavy-industrial "pipe" (or schedule pipe) standard and is commonly used in fluid transport, instrumentation, and hydraulic systems.
What Is ASTM A790 Stainless Steel Pipe?
ASTM A790 is a standard material specification for duplex and super duplex stainless steel pipes intended for high-strength and corrosive service conditions. Key grades include UNS S31803, UNS S32205, and UNS S32750, covering sizes from NPS ⅛ (DN 6) to NPS 36 (DN 900) and larger, with wall thickness schedules ranging from 5S to 80S. Since these steels are susceptible to embrittlement during prolonged exposure to high temperatures, operating temperatures must be strictly controlled.
GNEE ASTM Seamless Stainless Steel Pipe Product Range
| ASTM Standard | Product Type | Main Grades | Typical Applications |
|---|---|---|---|
| ASTM A312 | Seamless Austenitic Stainless Steel Pipe | TP304, TP304L, TP316, TP316L, TP321, TP347, 310S | Chemical pipelines, food processing, petrochemical plants |
| ASTM A213 | Seamless Boiler, Superheater & Heat Exchanger Tube | TP304, TP316L, TP321H, TP347H, 310S | Boilers, heat exchangers, condensers |
| ASTM A269 | Seamless General Service Stainless Steel Tube | TP304, TP304L, TP316, TP316L | Instrumentation, pharmaceutical, food and sanitary applications |
| ASTM A790 | Seamless Duplex Stainless Steel Pipe | UNS S31803, S32205, S32750 | Oil & gas, offshore, desalination and chemical industries |
Chemical Composition (Weight %)
| Grade | UNS | C (max) | Cr | Ni | Mo | Others |
| TP304 | S30400 | 0.08 | 18.0–20.0 | 8.0–11.0 | - | - |
| TP304L | S30403 | 0.035 | 18.0–20.0 | 8.0–12.0 | - | - |
| TP316 | S31600 | 0.08 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | - |
| TP316L | S31603 | 0.035 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | - |
| S31803 | 2205 | 0.03 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | N: 0.08–0.20 |
| S32750 | 2507 | 0.03 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | N: 0.24–0.32 |
Mechanical Properties
| Standard | Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (min %) |
| A312/A213 | TP304 | 75 ksi (515 MPa) | 30 ksi (205 MPa) | 35% |
| A312/A213 | TP316L | 70 ksi (485 MPa) | 25 ksi (170 MPa) | 35% |
| A790 | S31803 | 90 ksi (620 MPa) | 65 ksi (450 MPa) | 25% |
| A790 | S32750 | 116 ksi (800 MPa) | 80 ksi (550 MPa) | 15% |
Recent Export Records
| Product | Grade | OD × WT | Quantity | Destination | Application |
|---|---|---|---|---|---|
| ASTM A312 Seamless Pipe | TP316L | 114.3 × 6.02 mm | 168 Tons | Saudi Arabia | Petrochemical Pipeline Project |
| ASTM A213 Heat Exchanger Tube | TP321H | 25.4 × 2.11 mm | 92 Tons | India | Thermal Power Plant Heat Exchanger |
| ASTM A269 Bright Annealed Tube | TP304L | 12.7 × 1.24 mm | 56 Tons | South Korea | Pharmaceutical Processing Equipment |
| ASTM A790 Duplex Pipe | UNS S32205 | 168.3 × 7.11 mm | 135 Tons | UAE | Offshore Oil & Gas Platform |
| ASTM A312 Seamless Pipe | TP304L | 60.3 × 3.91 mm | 210 Tons | Vietnam | Food Processing Factory |
| ASTM A213 Seamless Tube | TP316L | 19.05 × 1.65 mm | 74 Tons | Turkey | Shell & Tube Heat Exchanger |
| ASTM A790 Super Duplex Pipe | UNS S32750 | 219.1 × 8.18 mm | 118 Tons | Australia | Seawater Desalination Project |
| ASTM A269 Instrument Tube | TP316L | 9.53 × 0.89 mm | 43 Tons | Germany | Precision Instrumentation System |
| ASTM A312 Seamless Pipe | TP310S | 88.9 × 5.49 mm | 126 Tons | Indonesia | High-Temperature Furnace Pipeline |
| ASTM A312 Seamless Pipe | TP347H | 168.3 × 8.18 mm | 154 Tons | South Africa | Boiler Steam Pipeline |
The products comply with multiple standards, including ASTM A312, ASTM A213, ASTM A269, and ASTM A790, as well as ASME, EN, and JIS specifications.
Standard documentation-such as EN 10204 3.1 Material Test Certificates (MTC), PMI reports, hydrostatic test reports, eddy current testing reports, and inspection certificates from SGS, BV, or TÜV-is provided to ensure full product traceability and compliance with international procurement requirements.
