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**Maria Pipes and Tubes**, located in Kuala Lumpur, Malaysia, is a well-respected manufacturer and supplier of **Stainless Steel 310H EFW (Electric Fusion Welded) Pipes**. They provide strong and dependable piping solutions specifically designed for high-temperature and corrosive industrial settings. Utilizing advanced EFW manufacturing techniques along with rigorous quality controls, the company ensures the delivery of precise and durable pipes in various sizes, schedules, and end configurations to meet the demands of complex projects.
Stainless Steel 310H EFW Pipe is basically made of chromium (25%) and nickel (20%), with the addition of carbon (0.25%) for increased thermal conductivity This pipe exhibits unique mechanical properties, te as high tensile strength, good ductility and good weldability. They can withstand temperatures up to 1100°C (2012°F) while maintaining system integrity. Advantages of 310H EFW pipe include outstanding oxidation resistance, excellent corrosion resistance in aggressive environments, and the ability to control thermal expansion, making it ideal for high temperature applications in industries such as petrochemical and aerospace.
| Specification | ASTM A358 / ASME SA358 |
| Specification | A / SA358 CLASS 1, A / SA358 CLASS 2, A / SA358 CLASS 3, A / SA358 CLASS 4, A / SA358 CLASS 5 |
| Grades | 304, 304L, 304H, 309S, 310S, 316, 316L, 316H, 317L, 321, 321H, 347, 347H, 904L ETC. |
| Type | EFW, ELECTRIC FUSION WELDED |
| Outer Diameter Size | Electric Fusion Welded / ERW- 8″ NB To 110″ NB (Nominal Bore Size) |
| Wall Thickness | Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
| STANDARD | UNS | WERKSTOFF NR. | JIS | BS | GOST | EN |
| SS 310H | S31009 | – | – | – | – |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 310H | 0.04 – 0.10 | 2.0 max | 1.00 max | 0.045 max | 0.030 max | 24.00 – 26.00 | – | 19.00 – 21.00 | 53.885 mi |
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| SS 310H | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 | 95 | 217 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
**Stainless Steel 310H** (UNS S31009) is a high-carbon, austenitic stainless steel alloy that contains around 24–26% chromium and 19–21% nickel, making it ideal for exceptional high-temperature performance. It boasts impressive oxidation resistance at elevated temperatures—capable of withstanding up to about 1,040 °C during intermittent exposure and 1,150 °C in continuous service. The higher carbon content enhances its creep resistance and high-temperature strength, which is crucial for applications involving prolonged exposure to extreme heat.
Thanks to its **EFW construction**, these pipes feature consistent wall thickness and robust weld integrity, ensuring reliability and structural consistency across various lengths. **Key applications** include industries that require both thermal stability and corrosion resistance—such as components in heat treatment furnaces, burners, and gasifiers; piping in petrochemical and oil & gas processing units; high-temperature systems in power plants; and food processing equipment where durability and ease of cleaning are essential.
| NPS Designator | Outside Diameter | Nominal Wall Thickness | ||||||||
| in. | mm | Schedule 5SA | Schedule 10SA | Schedule 40SA | Schedule 80SA | |||||
| in. | mm | in. | mm | in. | mm | in. | mm | |||
| 8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
| 10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500B | 12.70B |
| 12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375B | 9.52B | 0.500B | 12.70B |
| 14 | 14.000 | 355.60 | 0.156 | 3.96 | 0.188B | 4.78B | … | … | … | … |
| 16 | 16.000 | 406.40 | 0.165 | 4.19 | 0.188B | 4.78B | … | … | … | … |
| 18 | 18.000 | 457.20 | 0.165 | 4.19 | 0.188B | 4.78B | … | … | … | … |
| 20 | 20.000 | 508.00 | 0.188 | 4.78 | 0.188B | 4.78B | … | … | … | … |
| 22 | 22.000 | 558.80 | 0.188 | 4.78 | 0.218B | 5.54B | … | … | … | … |
| 24 | 24.000 | 609.60 | 0.218 | 5.54 | 0.250 | 6.35 | … | … | … | … |
| 30 | 30.000 | 762.00 | 0.250 | 6.35 | 0.312 | 7.92 | … | … | … | |
| SS Pipes Grade | Tensile Strength, N/mm2 (min) | Yield Strength, N/mm2 (min) | Elongation, % (min) |
| TP310H | OD < 17,1 mm – 515; | OD < 17,1 mm – 205; | 35 |
| OD > 17,1 mm – 485 | OD > 17,1 mm – 170 |
We offer custom sizes for Stainless Steel 310H EFW Pipes to meet your specific needs. Our dedicated team at Maria Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@mariapipes.com.
Stainless Steel 310H EFW Pipes is widely used in various industries due to its high thermal resistance and corrosion resistance. It is commonly used in refineries for heat exchangers, reactors, and exhaust gas handling pipelines. In electricity generation, these pipes are used in hot water and heating systems. In addition, they find applications in the aerospace industry for materials exposed to extreme temperatures and hot environments. Their durability and reliability make them suitable for manufacturing equipment in the chemical industry, oil industry and food processing.
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