Home > Stainless Steel >Stainless Steel 347 and 347H EFW Pipes
Bulan Pipes and Tubes is a top-notch manufacturer and supplier located in Jakarta, Indonesia, specializing in high-quality Stainless Steel 347 and 347H EFW Pipes. These pipes are crafted for outstanding performance in high-temperature and corrosive environments. Adhering to ASTM A358 and ASME SA358 standards, our Electric Fusion Welded (EFW) pipes are made from stabilized austenitic stainless steels that include niobium (columbium) to ensure excellent resistance to intergranular corrosion. The Grade 347H variant, which has a higher carbon content, provides enhanced creep strength for extended exposure to elevated temperatures. With a variety of sizes, schedules, and finishes available, these pipes are perfect for applications in petrochemical, power generation, refinery, and chemical processing industries.
The Stainless Steel 347 and 347H EFW Pipes are composed of approximately 17–20% chromium, 9–13% nickel, and a niobium stabilizer to prevent carbide precipitation. The Grade 347H features a higher carbon content (around 0.04–0.10%) for better creep and stress rupture strength. Their tensile strength typically falls between 515–750 MPa, with a yield strength of about 205 MPa. This alloy retains good ductility and toughness at high temperatures, reaching up to 870 °C (1600 °F). EFW pipes ensure excellent weld integrity, consistent wall thickness, and superior corrosion resistance in both oxidizing and reducing environments, making them a reliable choice for demanding applications.
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 Bulan 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 Bulan Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@bulanpipes.id.
Stainless Steel 347 and 347H EFW Pipes are widely used in various industries due to their exceptional resistance to corrosion and high temperatures The most common applications are chemical processing, where they lead to corrosive corrosion to the oil and gas industry, for the manufacture of pipelines and building materials; and power generation, especially in boilers and heat exchangers. They are also used in aerospace and automotive, as well as in the food and pharmaceutical industries, where hygiene and physical integrity are important Their reliability and durability make them ideal for harsh environments.
©2024 Bulan Pipes and Tubes . All Rights Reserved.