Ed Stainless is a reliable and prominent manufacturer and supplier of Stainless Steel 347H Flanges headquartered in Houston, Texas, USA. Reputed for providing quality stainless steel products, Ed Stainless has developed a good reputation among industries that require durability, accuracy, and resistance to adverse conditions. Their 347H flanges are specially made for high-temperature applications and provide superior performance under pressure. Through a customer-oriented strategy and the latest manufacturing facilities, Ed Stainless offers consistent solutions specific to address the changing requirements of customers in the oil & gas, chemical, petrochemical, and power generation industries across Texas and the United States.
Stainless Steel 347H Flanges offered by Ed Stainless are designed with a controlled chemical composition, such as Chromium (17-19%), Nickel (9-13%), and Columbium for stabilized structure. These flanges have outstanding mechanical properties like a minimum tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 35%. Carbon content improved for high-temperature resistance, 347H flanges maintain excellent strength and oxidation resistance at higher temperatures. Made to ASTM A182 specifications, Ed Stainless provides superior quality performance and lengthy service life in tough applications and is best suited for heat-intensive and corrosive conditions.
| 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 347H slip-on flanges, made from stainless steel alloy 347H, offer excellent resistance to corrosion and high temperatures, making them ideal for various industrial piping applications.
SS 347H weld neck flanges, crafted from stainless steel alloy 347H, provide superior corrosion resistance and high-temperature performance, making them suitable for high-pressure piping systems in industrial environments.
SS 347H blind flanges, made from stainless steel alloy 347, are used to seal pipe ends, offering excellent corrosion resistance and high-temperature durability for industrial applications.
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.
Ed Stainless’s Stainless Steel 347H Flanges find extensive use in processes where corrosion and heat resistance are essential. These applications include petrochemical processing, high-temperature steam services, aerospace engineering, power generation plants, and thermal oxidizers. Their superior mechanical properties render them ideal for pressure vessels, heat exchangers, and boiler parts. The stabilized alloy avoids intergranular corrosion, so it is best suited for welding-intensive applications. Ed Stainless provides varied industries in Texas and the U.S. with customized flange solutions that deliver high performance demands, safety, durability, and efficiency even in extreme operating conditions.







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