Chanchai Stainless, which has its main office in Bangkok, Thailand, is a well-known stainless steel manufacturer and supplier of high-quality stainless steel products. Being highly focused on precision engineering, quality, and customer satisfaction, the company has emerged as a reliable name in stainless steel. Its vast product range includes Stainless Steel 347 Flanges, which are distinguished by their strength, durability, and corrosion resistance. These flanges are designed to operate well in high-temperature and harsh environments. In fulfilling rigorous industry standards, Chanchai Stainless guarantees its Stainless Steel 347 Flanges to outperform, thus qualifying them for various industrial applications across the globe.
Stainless Steel 347 Flanges consist of about 18–20% chromium, 9–13% nickel, and 0.75% niobium with small traces of manganese, silicon, and carbon. The addition of niobium improves stability in terms of avoiding precipitation of carbides during welding and, in turn, enhancing resistance against intergranular corrosion. These flanges show high resistance against oxidation and corrosion at high temperatures. Mechanical properties involve tensile strength of 515–700 MPa, yield strength of about 205 MPa, and elongation of approximately 40%. In combination, these characteristics offer strong mechanical performance, stability, and endurance, even in harsh industrial conditions where heat and chemical exposure are present.
| 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. Chanchai Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
Stainless Steel 347 Flanges are heavily used in applications where high corrosion resistance and elevated-temperature strength are required. They find extensive use in chemical process plants, petrochemical facilities, and power plants, where parts are expected to endure severe chemicals and intense heat. As a result of their resistance to intergranular corrosion, they are especially suited for use in welded structures. Aerospace, food processing, and pharmaceutical companies also employ these flanges due to their resistance to oxidation and durability. They are also best for use in heat exchangers, reactors, pressure vessels, and piping systems, providing reliability and long-lasting service in demanding, high-performance applications.
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