Lecong Stainless stands out as a top-notch manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality Stainless Steel 347 Flanges. These flanges are crafted for exceptional strength, durability, and reliability, especially in high-temperature and corrosive settings. Thanks to the addition of niobium (columbium), they boast impressive resistance to intergranular corrosion, even when exposed to elevated temperatures. Adhering to strict international standards, Lecong Stainless’s Stainless Steel 347 Flanges promise consistent performance, outstanding thermal stability, and a long lifespan. With competitive pricing and a strong focus on customer satisfaction, the company has earned a reputation as a trusted partner for industries in Vietnam and beyond that need high-performance stainless steel flange solutions.
These flanges are made up of 17–19% chromium and 9–13% nickel, along with niobium stabilizers that help prevent carbide precipitation during high-temperature use. They offer a tensile strength of about 515 MPa, a yield strength of around 205 MPa, and an elongation of 40%. With oxidation resistance reaching up to 1500°F (816°C), these flanges demonstrate remarkable creep strength, durability, and toughness. Their stable structure under prolonged thermal exposure ensures they can be relied upon in applications that involve heat, stress, and corrosive environments, making Stainless Steel 347 Flanges an excellent choice for demanding industrial operations.
| 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 |
| 347 | 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 | ||||
| 347 | 515 | 205 | 35 | 92 | 201 |
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SS 347 socket weld flanges, manufactured from stainless steel alloy 347, ensure secure pipe connections with enhanced corrosion resistance and high-temperature strength, suitable for high-pressure systems in various industries.
SS 347 ring type joint flanges, constructed from stainless steel alloy 347, provide leak-proof connections with excellent corrosion resistance and high-temperature performance, ideal for high-pressure and critical service applications.
SS 347 forged flanges, made from stainless steel alloy 347, offer superior strength, excellent corrosion resistance, and high-temperature endurance, making them ideal for demanding industrial applications and high-pressure environments.
We offers the best quality Stainless Steel 347 Flanges which has undergone intense testing to produce top quality and performance. The flange is thoroughly tested for meeting international standards and specifications. Products supplied by us are certified by recognized authorities for traceability and reliability in each batch. With modern technology and strict quality control, we ensure durability, corrosion resistance, and good mechanical properties. Lecong Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
You’ll find Stainless Steel 347 Flanges widely utilized across various industries, including chemical processing, oil and gas, petrochemical, and power generation. They are often used in boilers, heat exchangers, superheaters, pressure vessels, and high-temperature piping systems. In marine and aerospace applications, they excel in resisting corrosive atmospheres and thermal cycling. These flanges are also perfect for refinery equipment, furnace components, and exhaust systems where heat and stress resistance are crucial. With their blend of durability, corrosion resistance, and high-temperature strength, Stainless Steel 347 Flanges are a dependable option for any industrial need.
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