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Bulan Pipes and Tubes is a well-respected manufacturer and supplier of Stainless Steel 321 and 321H EFW Pipes, located in Jakarta, Indonesia. They specialize in electric fusion welded (EFW) stainless steel piping solutions, delivering high-quality, heat-resistant pipes that are perfect for high-temperature applications. SS 321 and 321H are titanium-stabilized austenitic stainless steels, celebrated for their outstanding resistance to intergranular corrosion and impressive strength at elevated temperatures. These pipes are commonly found in heat exchangers, petrochemical plants, and refinery systems, all while adhering to international standards. Bulan Pipes and Tubes is committed to providing consistent quality, quick delivery, and customized solutions to meet various industrial needs.
Stainless Steel 321 and 321H EFW Pipes are titanium-stabilized stainless steels that contain about 17–19% chromium, 9–12% nickel, and trace amounts of titanium (at least five times the carbon content). SS 321H features a higher carbon content (0.04–0.10%) compared to SS 321, which boosts its strength at high temperatures. These grades boast excellent mechanical properties, with a tensile strength of around 515 MPa and a yield strength of 205 MPa. They also excel in creep resistance, can withstand oxidation up to 900°C, and offer great weldability. These characteristics make them perfect for high-temperature pressure systems and applications that experience thermal cycling or stress.
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 |
SS 321 | S32100 | 1.4541 | X6CrNiTi18-10 | SUS 321 |
SS 321H | S32109 | 1.4878 | X12CrNiTi18-9 | SUS 321H |
Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
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 % | 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.
Choosing Stainless Steel 321 and 321H 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 321 and 321H 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 321 and 321H EFW Pipes find extensive use in industries that operate under high-temperature conditions and demand resistance to oxidation and corrosion. Typical applications include heat exchangers, exhaust manifolds, refinery heaters, boiler tubes, chemical processing units, and components for aerospace engines. SS 321 is ideal for environments with frequent thermal cycling, while SS 321H is the go-to choice for high-pressure, high-temperature services due to its superior creep strength. These pipes are also utilized in various other applications, showcasing their versatility and reliability in demanding settings.
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