SS 304 Flange Dimensions

1. making them suitable for a wide range of industrial applications. SS 304 Flange Dimensions – Complete Technical Guide Stainless Steel 304 Flanges are widely used piping components designed to connect pipes, valves, pumps, and other equipment in piping systems. Manufactured from austenitic stainless steel, SS 304 flanges offer excellent corrosion resistance, good mechanical strength, and outstanding durability, Material Overview Material Grade: Stainless Steel 304 UNS Number: S30400 EN Number: 1.4301 Steel Type: Austenitic Stainless Steel Magnetic Property: Non-magnetic in annealed condition      Chemical Composition (%) Element Carbon (C) Chromium (Cr) 18.00 – 20.00 Nickel (Ni) Manganese (Mn) ≤ 2.00 Silicon (Si) Phosphorus (P) ≤ 0.045 Sulfur (S) Iron (Fe) Percentage ≤ 0.08 8.00 – 10.50 ≤ 1.00 ≤ 0.030 Balance Mechanical Properties Property Tensile Strength ≥ 515 MPa Yield Strength ≥ 205 MPa Elongation Hardness Density Value ≥ 40% ≤ 201 HB 8.0 g/cm³ Applicable Standards SS 304 Flanges are manufactured as per international standards: ASTM: A182 F304 ASME: B16.5, B16.47 EN: 1092-1 DIN: 2633, 2634, 2635 JIS: B2220      Types of SS 304 Flanges Weld Neck Flange Slip-On Flange Socket Weld Flange   

2. Nominal Size Threaded Flange Lap Joint Flange Blind Flange    Dimensions Standard of Stainless Steel 304 Flanges Outside Diameter (OD) (T) Min. Thickness RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) WN Bore ID (WB) Dia. Hub Base (HB) Dia. of Hub Top (HT) SO LTH (SL) WN LTH (WL) 1⁄2 3.50 0.38 1.38 4 0.62 2.38 0.88 0.62 1.19 0.84 0.56 1.81 3⁄4 3.88 0.44 1.69 4 0.62 2.75 1.09 0.82 1.50 1.05 0.56 2.00 1 4.25 0.50 2.00 4 0.62 3.12 1.36 1.05 1.94 1.32 0.62 2.12 11⁄4 11⁄2 4.62 0.56 2.50 4 0.62 3.50 1.70 1.38 2.31 1.66 0.75 2.19 5.00 0.62 2.88 4 0.62 3.88 1.95 1.61 2.56 1.90 0.81 2.38 2 6.00 0.69 3.62 4 0.75 4.75 2.44 2.07 3.06 2.38 0.94 2.44 21⁄2 7.00 0.81 4.12 4 0.75 5.50 2.94 2.47 3.56 2.88 1.06 2.69 3 7.50 0.88 5.00 4 0.75 6.00 3.57 3.07 4.25 3.50 1.12 2.69 31⁄2 8.50 0.88 5.50 8 0.75 7.00 4.07 3.55 4.81 4.00 1.19 2.75 4 9.00 0.88 6.19 8 0.75 7.50 4.57 4.03 5.31 4.50 1.25 2.94 5 10.00 0.88 7.31 8 0.88 8.50 5.66 5.05 6.44 5.56 1.38 3.44 6 11.00 0.94 8.50 8 0.88 9.50 6.72 6.07 7.56 6.63 1.50 3.44 8 13.50 1.06 10.62 8 0.88 11.75 8.72 7.98 9.69 8.63 1.69 3.94 10 16.00 1.12 12.75 12 1.00 14.25 10.88 10.02 12.00 10.75 1.88 3.94 12 19.00 1.19 15.00 12 1.00 17.00 12.88 12.00 14.38 12.75 2.12 4.44 14 21.00 1.31 16.25 12 1.12 18.75 14.14 13.25 15.75 14.00 2.19 4.94 16 23.50 1.38 18.50 16 1.12 21.25 16.16 15.25 18.00 16.00 2.44 4.94 18 25.00 1.50 21.00 16 1.25 22.75 18.18 17.25 19.88 18.00 2.62 5.44 20 27.50 1.62 23.00 20 1.25 25.00 20.20 19.25 22.00 20.00 2.81 5.62 22 29.50 1.75 25.25 20 1.38 27.25 22.22 21.25 24.25 22.00 3.07 5.82 24 32.00 1.81 27.25 20 1.38 29.50 24.25 23.25 26.12 24.00 3.19 5.94 Pressure Classes SS 304 Flanges are available in the following pressure ratings: ASME: Class 150, 300, 600, 900, 1500, 2500 EN/DIN: PN 6, PN 10, PN 16, PN 25, PN 40 JIS: 5K, 10K, 16K, 20K    Flange Facing Types Raised Face (RF) Flat Face (FF) Ring Type Joint (RTJ)   

3. Manufacturing Process SS 304 flanges are manufactured by forging, followed by heat treatment, machining, and surface finishing ensuring dimensional accuracy and mechanical integrity. Applications Oil & Gas pipelines Chemical & petrochemical plants Power generation Water treatment plants Food & pharmaceutical industries Marine and offshore applications       Advantages of SS 304 Flanges Excellent corrosion resistance High mechanical strength Long service life Good weldability Low maintenance Cost-effective solution       Testing & Certification Chemical & mechanical testing Hydrostatic testing PMI testing Dimensional inspection Mill Test Certificate as per EN 10204 3.1      Packaging & Supply Packed in wooden crates or pallets Anti-rust oil coating Plastic end caps for protection Custom marking available     Conclusion SS 304 Flanges provide a reliable, durable, and economical solution for piping systems across multiple industries. Their standardized dimensions, excellent corrosion resistance, and versatility make them one of the most preferred flange materials worldwide. For More Details https://www.hindco.co.in/stainless-steel-304-flanges-manufacturer-exporter-supplier-stockist.html Contact US: +91-9619035659 If any enquiries please contact us our support team will connect you as soon as possible