Stainless Steel (SS) 316 flanges are widely used in industrial piping, chemical processing, and marine applications, offering high corrosion resistance, durability, and strength. Understanding SS 316 flange specifications, size chart, and weight details ensures optimal selection for various engineering applications.
This guide includes:
SS 316 flange specifications and material properties
Flange dimensions chart and PCD chart
Weight chart and pressure ratings for SS 316 flanges
Difference between SS 304 and SS 316 stainless steel
Why Udhhyog is the best supplier for SS 316 flanges
What is SS 316? Material Properties & Benefits
SS 316 is an austenitic stainless steel alloy known for its superior corrosion resistance and high strength. It contains:
16-18% Chromium (Cr): Provides oxidation and rust resistance.
10-14% Nickel (Ni): Enhances ductility, toughness, and corrosion protection.
2-3% Molybdenum (Mo): Improves resistance to pitting and crevice corrosion, especially in marine and acidic environments.
Advantages of SS 316 Flanges:
✅ Superior Corrosion Resistance: Performs well in highly acidic, saltwater, and harsh environments.
✅ High Strength & Durability: Withstands extreme pressure and high temperatures.
✅ Better Chemical Resistance: Preferred in food, pharmaceutical, and chemical processing industries.
✅ Versatile Applications: Used in pipelines, marine structures, and industrial machinery.
SS 316 Flange Dimensions Chart (in mm)
SS 316 flanges are manufactured as per ASME B16.5, ANSI, and DIN standards. Below is the SS 316 flange dimensions chart for standard sizes.
| Nominal Pipe Size (NPS) | Flange Outer Diameter (mm) | Bolt Hole Diameter (mm) | Number of Bolts |
|---|---|---|---|
| 2" | 150 | 19 | 4 |
| 3" | 175 | 19 | 4 |
| 4" | 230 | 19 | 8 |
| 6" | 280 | 22 | 8 |
| 100mm | 210 | 19 | 8 |
| 150mm | 280 | 22 | 8 |
For a detailed SS 316 flange dimensions chart and PDF download, visit Udhhyog.
SS 316 Flange Weight Chart (Approximate in KG)
SS 316 flange weight varies based on size, pressure rating, and material thickness. Below is the approximate SS 316 flange weight chart.
| Flange Size | Weight (kg) |
| 2-inch | 1.8 – 2.6 kg |
| 3-inch | 2.9 – 4.2 kg |
| 4-inch | 4.0 – 5.8 kg |
| 6-inch | 6.5 – 9.2 kg |
| 100mm | 7.0 – 9.5 kg |
| 150mm | 10.0 – 13.0 kg |
SS 316 Flange Pressure Ratings
The pressure rating of SS 316 flanges depends on temperature and application requirements. Below is the approximate pressure rating for different classes.
| Flange Class | Pressure Rating (PSI) |
| Class 150 | 285 PSI |
| Class 300 | 740 PSI |
| Class 600 | 1,480 PSI |
| Class 900 | 2,220 PSI |
| Class 1500 | 3,705 PSI |
| Class 2500 | 6,170 PSI |
What is the Difference Between SS 304 and SS 316?
Both SS 304 and SS 316 are austenitic stainless steels, but they have key differences:
| Feature | SS 304 | SS 316 |
| Composition | 18% Chromium, 8% Nickel | 16% Chromium, 10% Nickel, 2% Molybdenum |
| Corrosion Resistance | Good | Excellent, especially against chloride exposure |
| Strength | High | Slightly higher than SS 304 |
| Applications | General-purpose use, food industry | Marine, chemical, and pharmaceutical industries |
| Cost | More affordable | Slightly expensive due to molybdenum content |
Why Choose Udhhyog for SS 316 Flanges?
✅ High-Quality SS 316 Flanges – Manufactured as per ASME, ANSI, and IS standards.
✅ Customization Available – Flanges tailored for industrial needs.
✅ Competitive Rates – Best pricing for bulk and custom orders.
✅ Reliable Supply Chain – Serving Delhi, Haryana, UP, and J&K.
For stainless steel flanges at competitive prices, trust Udhhyog – your reliable industrial supplier.
Conclusion
SS 316 flanges offer exceptional strength, corrosion resistance, and high-pressure handling capabilities, making them ideal for marine, chemical, and industrial applications. Understanding SS 316 flange specifications, dimensions, and weight ensures the right selection for your requirements. Udhhyog supplies high-quality SS 316 flanges, from 2-inch to 150mm sizes, meeting Class 150 to Class 2500 standards.
For detailed specifications and bulk orders, check out the Udhhyog SS Flange Price List and Catalogue PDF.
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