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Home > Stainless Steel > Stainless Steel 304H Seamless Pipes
At Samia Pipes and Tubes, based in Tunis, Tunisia, we manufacture and supply premium Stainless Steel 304H Seamless Pipes designed for high-temperature and demanding industrial applications. Known for their strength, durability, and excellent corrosion resistance, these pipes are produced using a seamless process that ensures uniform structure and superior reliability. The 304H grade, with its higher carbon content, provides enhanced tensile strength and creep resistance at elevated temperatures. Trusted by industries across Tunisia and beyond, Samia Pipes and Tubesdelivers piping solutions that meet international standards while supporting safe, efficient, and long-lasting industrial operations.
Stainless Steel 304H Seamless Pipes are austenitic stainless steels composed mainly of iron, chromium (18–20%), and nickel (8–10.5%), with higher carbon content (0.04–0.10%) to improve strength and creep resistance at high temperatures. These pipes offer excellent tensile strength (typically 515–700 MPa), yield strength (205–310 MPa), and toughness. Seamless construction eliminates weld joints, ensuring uniform wall thickness and enhanced structural integrity. With superior thermal stability and corrosion resistance, 304H seamless pipes perform reliably under extreme heat and mechanical stress in demanding industrial environments.
Range : 6NB to 1200NB
Outer Diameter : 1/8″ NPS to 12″ NPS
Thickness : 0.6 mm to 12.7 mm
Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
Length : Single Random, Double Random & Cut Length
Specifications : ASTM A312 / ASTM SA312
Types : Round, Square, Rectangle, Hydraulic, Honed Tubes
End : 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.
Choosing Stainless Steel 304H Seamless Pipes from Samia Pipes and Tubes ensures high quality and durability, as these tubing offer excellent corrosion resistance and strength. Our commitment to exceptional service and reliable delivery guarantees customer satisfaction across various industrial applications. Our expertise in stainless steel products ensures you receive a top-tier solution tailored to your needs.
Samia Pipes and Tubes, one of the largest suppliers of Stainless Steel 304H Seamless Pipes in Tunis, Tunisia, 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 Samia Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@samiapipes.com.
Stainless Steel 304H Seamless Pipes are widely used in industries that require high-temperature strength, corrosion resistance, and pressure-handling capability. Common applications include boilers, heat exchangers, power generation systems, petrochemical plants, and high-temperature process piping. Their seamless construction ensures superior performance in high-pressure and thermal environments, reducing the risk of failure. The enhanced carbon content of 304H provides added durability under prolonged heat exposure. Samia Pipes and Tubes supplies these pipes to support safe, efficient, and reliable industrial operations, offering long-lasting solutions for critical applications where performance and safety are paramount.
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