MERIH STAINLESS, based in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-performance stainless steel products, including their renowned Stainless Steel 347 Tubing. With a reputation for precision engineering and advanced manufacturing techniques, they are dedicated to quality. Their Stainless Steel 347 Tubing is crafted to excel in high-temperature and corrosive settings, ensuring remarkable durability and structural integrity. Committed to innovation and customer satisfaction, MERIH STAINLESS caters to global markets with reliable, efficient, and compliant stainless steel tubing designed for industrial, chemical, and energy sector needs.
Stainless Steel 347 Tubing is an austenitic stainless steel alloy that’s stabilized with columbium (niobium) to combat intergranular corrosion. Its chemical makeup features chromium (17–20%), nickel (8–13%), and carbon (up to 0.08%), with niobium added to prevent carbide precipitation during welding. This alloy boasts impressive mechanical strength, with a minimum tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 35–40%. It also has a Brinell hardness of up to 217. Its unique structure offers exceptional heat resistance, making it perfect for pressure-containing and high-temperature applications across various industries.
| Specifications | : | ASTM A/ASME SA249/A269/A270 |
| Dimensions | : | ASTM, ASME, and API |
| SS 304H Tubes Size | : | 1/8″NB TO 30″NB IN |
| Thickness | : | 1mm to 20mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10 |
| Finish | : | BA Finish inside and outside, Electropolished finish inside and outside |
| Type | : | Electropolished Pipes & Tubes |
| Form | : | Round, Square, Rectangular, Hydraulic Etc |
| Length | : | Up to 6 meters, custom cut lengths |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % |
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We sets high standards regarding quality for stainless steel 347 tubing through multiple testing and evaluation procedures. Inspections are extensive and include determination of chemical compositions, mechanical testing, and testing by non-destruction methods on every product. Merih also offers full documentation in the form of Mill Test Certification.
Offering excellent corrosion resistance, Stainless Steel 347 Seamless Tubing is known for its uniformity and strength. It typically comes in sizes ranging from 6mm to 350mm in diameter and lengths of up to 6 meters. Ideal for applications requiring high pressure and corrosive resistance.
Stainless Steel 347 Welded Tubing provides superior resistance to chloride-induced stress corrosion cracking. Available in sizes from 10mm to 150mm in diameter and standard lengths of 6 meters. It is often used in industrial and chemical processing applications where weld strength is critical.
Featuring outstanding corrosion resistance, Stainless Steel 347 Heat Exchanger Tubes are used in demanding environments. Sizes typically range from 6mm to 50mm in diameter, with wall thickness varying from 1mm to 3mm. These tubes are designed for high temperature and pressure conditions.
Stainless Steel 347 Instrumentation Tubing offers excellent resistance to corrosion and is ideal for precise measurement systems. Common sizes include 1/8″ to 1/2″ in diameter and lengths up to 6 meters. It is suitable for high-pressure applications and harsh environments.
With superior resistance to both oxidation and corrosion, Stainless Steel 347 Boiler Tubes are used in high-pressure steam applications. Sizes typically range from 25mm to 100mm in diameter, with lengths of up to 6 meters. They are essential for maintaining efficiency in boiler systems.
Stainless Steel 347 U-tubes provide excellent resistance to corrosive fluids and are commonly used in heat exchangers. Standard sizes range from 10mm to 100mm in diameter with various lengths. They are designed to handle thermal expansion and contraction in dynamic environments.
Stainless Steel 347 Condenser Tubes are used in marine and power generation applications, offering exceptional resistance to seawater and acidic environments. Sizes typically range from 10mm to 50mm in diameter and lengths up to 6 meters, providing durability and efficiency.
Stainless Steel 347 Fin Tubes are designed for enhanced heat transfer and corrosion resistance in air-cooled heat exchangers. They are available in various diameters, commonly 25mm to 50mm, with fin lengths customizable to specific requirements, ensuring effective cooling in challenging environments.
Stainless Steel 347 Tubing finds its place in industries where high strength and corrosion resistance at elevated temperatures are crucial. You’ll often see it in heat exchangers, condensers, superheaters, and boiler components in power plants and refineries. Additionally, it’s widely used in the chemical and petrochemical sectors for transporting high-temperature fluids and gases. This tubing is particularly well-suited for applications that demand reliability and performance under extreme conditions.







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