- sales@lailapipes.com
- Muscat, OMAN
Home > Stainless Steel > Stainless Steel 321/321H Seamless Tubing
Laila Pipes and Tubes is a reputable manufacturer and supplier of Stainless Steel 321 / 321H Seamless Tubing based in Muscat, Oman. They provide top-notch tubular solutions designed to withstand high temperatures and corrosive environments. With a strong focus on precision manufacturing, rigorous quality control, and a commitment to customer satisfaction, the company delivers seamless SS 321 and 321H tubing that boasts excellent thermal stability, oxidation resistance, and a long lifespan. Catering to various industries, including petrochemical, power generation, chemical processing, and aerospace, Laila Pipes and Tubes guarantees accurate dimensions, consistent structure, and timely delivery for critical applications.
Stainless Steel 321 / 321H Seamless Tubing is a titanium-stabilized austenitic stainless steel made up of chromium, nickel, iron, titanium, and a controlled amount of carbon. The addition of titanium helps prevent carbide precipitation and boosts resistance to intergranular corrosion during welding and extended exposure to high temperatures. SS 321H, with its higher carbon content, offers improved creep strength at elevated temperatures. The seamless design ensures exceptional pressure resistance and structural integrity. These grades provide good tensile strength, impressive ductility, and dependable mechanical stability under thermal stress.
Tube Range : 6.35 mm OD To 101.6 mm OD Guage: 25 SWG – 10 SWG
Outer Diameter : 3.00 mm – 219.10 mm
Wall Thickness : 0.40 mm – 12.70 mm
Schedules : 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Length : Upto 30 meters, Custom Cut Lengths
Specifications : ASTM A213 / ASTM SA213
Types : Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes
| SS | 321 | 321H |
| Ni | 09 – 12 | 09 – 12 |
| N | 0.10 | 0.10 |
| Cr | 17 – 19 | 17 – 19 |
| C | 0.08 max | 0.04 – 0.08 |
| Si | 1 max | 0.75 max |
| Mn | 2 max | 2 max |
| P | 0.040 max | 0.045 max |
| S | 0.030 max | 0.03 max |
| TI | 4(C+N) | 0.70 max |
| Grade | 321 | 321H |
| Tensile Strength (MPa) min | 515 | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 | 205 |
| Elongation (% in 50mm) min | 40 | 40 |
| Hardness | ||
| Rockwell B (HR B) max | 95 | 95 |
| Brinell (HB) max | 217 | 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 321/321H Seamless Tubing from Laila Pipes and Tubes guarantees you a high-performance product designed for challenging environments. Our tubing offers exceptional resistance to oxidation and intergranular corrosion, making it perfect for high-temperature applications in industries like aerospace, chemical processing, and petrochemical. With a focus on quality, we implement stringent testing and quality control measures to ensure durability and reliability. Our expert team provides tailored solutions to meet your specific needs, ensuring customer satisfaction. Trust Laila for superior stainless steel tubing that enhances the safety and efficiency of your operations.
Laila Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Seamless Tubing in Dubai, OMAN, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
Yes, we offer custom sizes for Stainless Steel 321/321H Seamless Tubing to meet your specific requirements. Our team at Laila Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@lailapipes.com.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | – | 1.4878 | X6CrNiTi18-10 | – | SUS 321H |
This type of tubing is widely utilized in situations that demand resistance to high temperatures and intergranular corrosion. You’ll often find it in heat exchangers, superheaters, exhaust systems, refinery heaters, chemical processing equipment, and aircraft components. It’s also commonly used in power plants, oil and gas facilities, and industrial heating systems where thermal cycling and weld stability are crucial. SS 321 and 321H seamless tubing is known for its reliable performance in continuous high-temperature settings, making it a go-to choice for challenging industrial applications.
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