Home > Stainless Steel > Stainless Steel 304H Seamless Pipes
Maria Pipes and Tubes, located in Kuala Lumpur, Malaysia, has earned a solid reputation as a reliable manufacturer and supplier of top-notch stainless steel piping solutions. Their Stainless Steel 304H Seamless Pipes are designed to deliver outstanding strength and resist corrosion, especially in high-temperature settings. Crafted with precision through seamless manufacturing and adhering to international standards, these pipes are perfect for demanding industries like power generation, petrochemicals, and food processing—where dependability and durability in tough conditions are a must.
These Stainless Steel 304H Seamless Pipes boast a high-carbon austenitic alloy composition, featuring carbon content between 0.04% and 0.10%, along with 18–20% chromium and 8–10.5% nickel. Mechanically, they provide a minimum tensile strength of 515 MPa, a yield strength of 205 MPa, an elongation of 40%, and maximum hardness values of HRB 92 (or HB 201). Their density is around 8 g/cm³, offering excellent thermal stability and physical properties that make them suitable for both structural and fluid-handling applications.
Range :Â 6NB to 1200NB
Outer Diameter :Â 1/8″ NPS to 12″ NPS
Thickness :Â 0.6 mm to 12.7 mm
Schedules :Â SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
Length :Â Single Random, Double Random & Cut Length
Specifications :Â ASTM A312 / ASTM SA312
Types :Â Round, Square, Rectangle, Hydraulic, Honed Tubes
End :Â Plain End, Beveled End
| STANDARD | UNS | WERKSTOFF NR. |
| SS 304H | S30409 | 1.4301 |
| Ni | 8 – 11 |
| Fe | Balance |
| Cr | 18 – 20 |
| C | 0.04 – 0.10 |
| Si | 0.75 max |
| Mn | 2 max |
| P | 0.045 max |
| S | 0.030 max |
| N |
| Grade | 304H |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Hardness | |
| Rockwell B (HR B) max | 92 |
| Brinell (HB) max | 201 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
You’ll find Stainless Steel 304H Seamless Pipes widely used in high-temperature and corrosive environments, such as superheaters and reheaters in power plants, heat exchangers, condensers, and chemical reactors. They’re also utilized in oil and gas processing, pharmaceutical systems, food and beverage piping, and architectural construction where both mechanical strength and hygienic performance are essential.
Maria Pipes and Tubes, one of the largest suppliers of Stainless Steel 304H Seamless Pipes 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.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 304H | S30409 | 304S51 | – | 1.4948 | X2CrNi19-11 | – | – |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 304H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Yes, we offer custom sizes for Stainless Steel 304H Seamless Pipes 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.
Stainless Steel 304H Seamless Pipes are widely used in various industries due to their excellent mechanical properties and corrosion resistance. Typical applications include chemical plants, steam facilities, and oil and gas plants, and they are also used in high-temperature pipeline applications, such as heat exchangers and water in the production of water, and electricity. In addition, 304H pipe is used in the food and beverage manufacturing, pharmaceutical and marine environments, where durability and purity are required to ensure product safety and quality.
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