Njabulo Stainless is a top-notch manufacturer and supplier located in Cape Town, South Africa, with a focus on high-quality Stainless Steel 347 Flanges. Known for their precision engineering and outstanding durability, Njabulo Stainless delivers reliable flange solutions tailored to meet a variety of industrial needs. With a strong commitment to excellence, the company guarantees that every product adheres to international quality standards and performs exceptionally well, even in tough conditions. Their Stainless Steel 347 Flanges are crafted to provide remarkable resistance to corrosion and high-temperature oxidation, making them a go-to choice for clients in the petrochemical, power generation, and marine sectors.
These flanges are primarily made up of chromium (17–19%), nickel (9–13%), and columbium/tantalum, which helps stabilize against carbide precipitation. This unique blend offers impressive corrosion resistance and strength at elevated temperatures. The material boasts a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. With a density of roughly 8.0 g/cm³ and a melting point close to 1400°C, these mechanical properties make Stainless Steel 347 perfect for high-stress and high-heat environments, ensuring exceptional durability and performance in demanding industrial applications.
| 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. Njabulo Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
Stainless Steel 347 Flanges find their place in industries that require robust resistance to heat, oxidation, and corrosion. You’ll commonly see them in chemical processing plants, oil and gas refineries, food processing equipment, and heat exchangers. They’re also utilized in power generation units, boilers, and exhaust systems where stability at elevated temperatures is crucial. The alloy’s resistance to intergranular corrosion makes it ideal for welded constructions and high-temperature service conditions. In the marine and aerospace industries, these flanges provide leak-free and durable connections in piping systems, further solidifying Njabulo Stainless’s reputation for delivering reliable, long-lasting stainless steel solutions.
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