Home > Stainless Steel >Stainless Steel 347 and 347H EFW Pipes
Bereket Pipes, a prominent manufacturer and supplier located in Addis Ababa, Ethiopia, is dedicated to crafting top-notch Stainless Steel 347 and 347H EFW Pipes that excel in tough industrial settings. These pipes are produced using cutting-edge Electric Fusion Welding (EFW) technology, which guarantees outstanding weld integrity, precise dimensions, and impressive corrosion resistance. Renowned for their durability and ability to withstand high temperatures, Bereket Pipes’ Stainless Steel 347 and 347H EFW Pipes are highly regarded in sectors like chemical processing, petrochemicals, power generation, and oil and gas, where dependability, longevity, and exceptional mechanical properties are crucial.
The Stainless Steel 347 and 347H EFW Pipes are stabilized with niobium and consist of chromium (17–19%), nickel (9–13%), carbon, manganese, silicon, and phosphorus. This unique blend boosts their resistance to intergranular corrosion and oxidation at elevated temperatures. The material boasts a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. With its higher carbon content, Stainless Steel 347H offers improved creep strength and heat resistance, making both grades ideal for high-pressure, high-temperature applications while ensuring excellent weldability and toughness.
| 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. | EN | JIS | GOST |
| SS 347 | S34700 | 1.4550 | X6CrNiNb18-10 | SUS 347 | 08Ch18N12B |
| SS 347H | S34709 | 1.4961 | X6CrNiNb18-12 | SUS 347H | – |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % | 92 | 201 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Stainless Steel 347 and 347H EFW Pipes from Bereket Pipes and Tubes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.
| 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 | … | … | … | … |
We offer custom sizes for Stainless Steel 347 and 347H EFW Pipes to meet your specific needs. Our dedicated team at Bereket Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@bereketpipes.com.
These Stainless Steel 347 and 347H EFW Pipes find extensive use in scenarios that demand exceptional heat and corrosion resistance. They are perfect for heat exchangers, boiler tubes, exhaust manifolds, and process piping systems. The petrochemical and oil refining sectors rely on these pipes for fluid transfer in extreme conditions. In power plants, they are utilized in superheater and reheater tubes due to their thermal stability. Moreover, their hygienic and non-reactive characteristics make them suitable for food processing and pharmaceutical equipment that operates under high temperatures and pressures.
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