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Stainless Steel 316 and 316L pipe fittings are premium-grade components widely used in industries requiring superior corrosion resistance. These fittings are manufactured from high-quality austenitic stainless steel, making them ideal for applications in chemical processing, marine environments, pharmaceutical production, and food processing. With excellent durability and long service life, SS 316/316L fittings are a reliable choice for both industrial and sanitary piping systems.
Our range of Stainless Steel 316 and 316L pipe fittings includes elbows, tees, reducers, flanges, caps, and couplings. These fittings are available in various sizes, schedules, and pressure ratings to meet the diverse requirements of modern piping systems. Whether you need seamless or welded fittings, our products are manufactured to comply with ASTM and ASME standards, ensuring precision and compatibility across different applications.
Stainless Steel 316 and 316L pipe fittings are austenitic stainless steel materials known for their excellent corrosion resistance, durability, and versatility. These fittings are widely used in chemical, petrochemical, pharmaceutical, food processing, and marine industries. They are ideal for piping systems that handle corrosive fluids and require long-term reliability.
SS 316 contains approximately 16–18% chromium, 10–14% nickel, and 2–3% molybdenum. The 316L variant has lower carbon content (<0.03%) to minimize carbide precipitation during welding. The addition of molybdenum enhances corrosion resistance, particularly against chlorides and other industrial chemicals.
SS 316 and 316L offer excellent resistance to chloride-induced corrosion, pitting, and stress corrosion cracking. The low carbon content in 316L minimizes carbide precipitation during welding, making it particularly suitable for welded piping systems. These materials maintain their mechanical properties across a wide temperature range and resist oxidation, ensuring optimal performance in harsh environments.
Stainless Steel 316/316L pipe fittings are extensively used in industries such as chemical and petrochemical plants, desalination and water treatment facilities, marine vessels, pharmaceutical manufacturing, and food & beverage processing. Their ability to withstand corrosive fluids, high pressure, and extreme temperatures makes them indispensable for both industrial and sanitary piping solutions.
316/316L pipe fittings exhibit tensile strength ranging from 515–690 MPa and yield strength between 205–310 MPa. Elongation typically ranges from 35–45%, providing excellent ductility and toughness. These mechanical properties make them suitable for high-pressure piping systems and demanding industrial applications.
These stainless steel fittings offer superior resistance to corrosion in oxidizing and mildly reducing environments. They are particularly resistant to pitting and crevice corrosion in chloride-containing media, making them suitable for marine applications, chemical processing, and wastewater treatment systems.
Specification Table
| Specification | Details |
|---|---|
| Material | Stainless Steel 316 / 316L |
| Standards | ASTM A182, ASTM A403, ASME B16.9, ASME B16.11 |
| Fitting Types | Elbows, Tees, Reducers, Flanges, Caps, Couplings |
| Size Range | 1/2" to 48" (DN15 to DN1200) |
| Pressure Rating | Class 150 to 2500, SCH 10 to SCH XXS |
| Surface Finish | Polished, Pickled, Bead Blasted, or as per customer requirement |
| Applications | Chemical, Marine, Pharmaceutical, Food & Beverage, Petrochemical |
| Temperature Range | -196°C to 870°C (-321°F to 1598°F) |
| Corrosion Resistance | Excellent resistance to chlorides and industrial chemicals |
| Certification | ISO 9001, PED, CE, Material Test Certificate (MTC) available |
Chemical Composition (Typical ranges for SS316/316L)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | 316 (%) | 316L (%) |
|---|---|---|
| Carbon (C) | 0.08 max | 0.03 max |
| Chromium (Cr) | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 | 2.0 – 3.0 |
| Manganese (Mn) | 2.0 max | 2.0 max |
| Silicon (Si) | 0.75 max | 0.75 max |
| Phosphorus (P) | 0.045 max | 0.045 max |
| Sulfur (S) | 0.03 max | 0.03 max |
| Nitrogen (N) | 0.10 max | 0.10 max |
| Iron (Fe) | Balance | Balance |
Mechanical Properties (Typical)
| Property | 316 | 316L |
|---|---|---|
| Tensile Strength (MPa) | 515 – 720 | 485 – 690 |
| Yield Strength (MPa) | 205 min | 170 min |
| Elongation (%) | 40 min | 40 min |
| Hardness (HRB) | 79 max | 79 max |
| Impact Strength (J) | >60 | >60 |
| Modulus of Elasticity (GPa) | 193 | 193 |
| Density (g/cm³) | 8.0 | 8.0 |
| Operating Temperature | -196°C to 870°C | -196°C to 870°C |
Equivalent Grades
| Standard | Grade Equivalent |
|---|---|
| ASTM / ASME | 316 / 316L |
| AISI | 316 / 316L |
| EN (Europe) | 1.4401 / 1.4404 |
| JIS (Japan) | SUS 316 / SUS 316L |
| DIN (Germany) | 1.4435 / 1.4436 |
| BS (UK) | 316S16 / 316S11 |
| GB (China) | 0Cr17Ni12Mo2 / 0Cr17Ni12Mo2 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Size (inch) | Outer Diameter (mm) | Schedule | Wall Thickness (mm) | Approx. Weight (kg/m) |
|---|---|---|---|---|
| 1/2" | 21.3 | 10S | 2.11 | 0.91 |
| 3/4" | 26.7 | 10S | 2.31 | 1.25 |
| 1" | 33.4 | 10S | 2.77 | 1.68 |
| 1 1/2" | 48.3 | 10S | 3.05 | 3.00 |
| 2" | 60.3 | 10S | 3.65 | 4.34 |
| 3" | 88.9 | 10S | 4.78 | 8.31 |
| 4" | 114.3 | 10S | 6.02 | 13.2 |
| 6" | 168.3 | 10S | 7.11 | 23.7 |
| 8" | 219.1 | 10S | 8.18 | 36.8 |
| 10" | 273.0 | 10S | 9.27 | 53.1 |
| 12" | 323.9 | 10S | 10.31 | 72.5 |
Types Of Pipe Fittingss and Tubes
Tube Unions
Bite Type Tube Fittings
Stainless Steel Pipe Fittings
Forged Fsitting
Fitting
Carbon Steel Butt Weld Pipe Fittings
Frequently Asked Questions (FAQ)
Q1: What is Stainless Steel 316 and 316L?
A1: Stainless Steel 316 is a high-grade austenitic stainless steel with excellent corrosion resistance, especially against chlorides. 316L is the low-carbon version, ideal for welded applications as it reduces the risk of carbide precipitation.
Q2: What types of fittings are available in SS 316 / 316L?
A2: Common fittings include elbows, tees, reducers, flanges, caps, and couplings, available in various sizes, schedules, and pressure ratings to suit industrial and sanitary piping systems.
Q3: What industries use SS 316 / 316L pipe fittings?
A3: These fittings are widely used in chemical, petrochemical, marine, pharmaceutical, food & beverage, and water treatment industries due to their corrosion resistance and durability.
Q4: What standards do SS 316 / 316L fittings comply with?
A4: They are manufactured according to ASTM A182, ASTM A403, and ASME B16.9 / B16.11 standards, ensuring reliability and compatibility with global piping systems.
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