- sales@mariapipes.com
- Kuala lumpur, Malaysia
Home > Stainless Steel > Stainless Steel 321/321H Seamless Tubing
Maria Pipes and Tubes, a well-respected manufacturer and supplier based in Kuala Lumpur, Malaysia, specializes in top-notch Stainless Steel 321/321H Seamless Tubing, perfect for high-temperature and corrosive environments. These tubes are stabilized with titanium, which gives them remarkable resistance to intergranular corrosion, making them a great fit for situations that involve frequent thermal cycling. The 321H grade, known for its higher carbon content, offers improved creep and stress rupture strength when exposed to elevated temperatures. Adhering to international standards, Maria Pipes and Tubes guarantees exceptional dimensional accuracy, a fantastic surface finish, and consistent quality, making these seamless tubes a dependable option for demanding industrial applications.
The Stainless Steel 321/321H Seamless Tubing is made up of chromium, nickel, and titanium stabilization, which helps prevent carbide precipitation during high-temperature exposure. The 321 grade is known for its excellent resistance to oxidation and scaling up to 870°C, while the 321H variant provides enhanced high-temperature strength thanks to its higher carbon content. Both grades boast impressive tensile strength, yield strength, and elongation, along with stable mechanical properties even under thermal stress. Their unique composition ensures outstanding corrosion resistance and structural integrity in high-temperature and high-pressure settings.
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 Maria 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 Brydon for superior stainless steel tubing that enhances the safety and efficiency of your operations.
Maria Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Seamless Tubing in Kuala lumpur, Malaysia, 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 Maria Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@mariapipes.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 |
These seamless tubes find extensive use across various industries, including oil and gas, petrochemical, chemical processing, power generation, and aerospace. They are commonly utilized in heat exchangers, superheater tubes, condenser tubes, furnace components, and high-temperature steam piping. Their ability to maintain mechanical strength and resist corrosion under continuous thermal exposure makes them perfect for critical operations. With a long service life, low maintenance requirements, and reliable performance, these tubes are the go-to choice for industries that demand dependable operation in both corrosive and high-heat conditions.
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