MERIH STAINLESS, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of premium stainless steel products. Their Stainless Steel 347H Flanges are crafted to meet the tough demands of industrial piping systems. With precision manufacturing and adherence to international standards, these flanges boast excellent corrosion resistance, high-temperature stability, and remarkable mechanical strength. MERIH STAINLESS guarantees that each flange delivers reliable performance and long-lasting durability, making them perfect for critical applications in the chemical, petrochemical, power, and marine sectors. These flanges are designed for secure connections and leak-free operation, even in challenging conditions.
Stainless Steel 347H Flanges are primarily made up of iron, chromium, and nickel, with niobium added to prevent carbide precipitation and a higher carbon content to enhance high-temperature strength. They showcase impressive tensile strength, yield strength, and hardness, while also maintaining good ductility. These flanges are stable under thermal and mechanical stress, resist intergranular corrosion, and offer oxidation resistance in high-temperature settings. The blend of mechanical and chemical properties ensures that 347H flanges perform reliably in demanding industrial systems, including high-pressure and high-temperature piping networks.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| 347H | 0.08 | 2.0 | 1.0 | 0.045 | 0.030 | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347H | 515 | 205 | 35 | 92 | 201 |
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SS 347Hsocket weld flanges, manufactured from stainless steel alloy 347H, ensure secure pipe connections with enhanced corrosion resistance and high-temperature strength, suitable for high-pressure systems in various industries.
SS 347H ring type joint flanges, constructed from stainless steel alloy 347H, provide leak-proof connections with excellent corrosion resistance and high-temperature performance, ideal for high-pressure and critical service applications.
SS 347H forged flanges, made from stainless steel alloy 347H, offer superior strength, excellent corrosion resistance, and high-temperature endurance, making them ideal for demanding industrial applications and high-pressure environments.
We conduct various rigorous tests, including dimensional, mechanical, and chemical analysis, to ensure the highest quality of our Stainless Steel 347H Flanges. Our in-house quality control team oversees all processes, complemented by third-party inspections to guarantee compliance with industry standards. With a commitment to prompt delivery we ensure that our clients receive their products on time, every time.
Stainless Steel 347H Flanges find extensive use in industries that need robust, high-performance piping connections. They are particularly suited for power plants, oil and gas refineries, chemical processing facilities, and marine applications due to their high-temperature and corrosion-resistant characteristics. These flanges connect pipes, valves, pumps, and other equipment, ensuring secure and leak-free joints. They are ideal for steam systems, pressure vessels, and industrial boilers where safety and reliability are paramount.
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