Stainless Steel 316/316L Pipe Fittings
Rose Metal Industries is a reputed manufacturer, stockist and exporter of premium-quality Stainless Steel 316 and 316L pipe fittings, supplying elbows, tees, reducers, caps, couplings, stub ends and flanges to industrial and project customers. Our SS316/316L fittings are engineered for demanding service in chloride-bearing, marine and chemical environments where corrosion resistance, dimensional accuracy and reliability are essential. We serve customers across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry) and the Andaman & Nicobar Islands and maintain export channels to Europe, the Middle East, Southeast Asia, Africa and the Americas.
Manufactured from certified billets and plate/pipe inputs, our fittings are available in seamless and welded constructions, with options for hot-formed, cold-formed and forged pieces depending on the size and application. The molybdenum-bearing SS316 family provides superior resistance to pitting and crevice corrosion compared with SS304; the low-carbon variant SS316L minimizes carbide precipitation in welded fabrications, making it the preferred choice for welded piping systems, pressure vessels and hygienic applications. Rose Metal Industries offers finishes including pickled & passivated, annealed & pickled, and mechanically polished surfaces to meet sanitary and aesthetic requirements.
Our technical capability covers manufacturing and supply to global and Indian standards (commonly used: ASTM A403 for wrought fittings, ASME B16.9 for butt-weld fittings, ASME B16.11 for forged fittings, and EN/DIN equivalents) with complete traceability — mill heat numbers, MTCs (EN 10204 3.1) and test reports. Rose Metal Industries performs dimensional inspections, hydrostatic tests, PMI or spectrochemical verification, radiography/UT (where required), and hardness/tensile testing to ensure every fitting meets project specifications and international quality norms..
Common applications of our SS316/316L pipe fittings include chemical processing lines, offshore & marine piping, desalination and water-treatment plants, food and beverage processing, pharmaceutical production, petrochemical plants and architectural plumbing. We supply standard stock for fast dispatch and also offer custom-fabricated fittings — long radius elbows, custom-reducers, sweep bends and special tees — to suit EPC contractors, fabricators and OEMs. Regional customers in coastal and island areas such as Chennai, Visakhapatnam, Port Blair and Puducherry particularly value the enhanced chloride resistance of SS316/316L fittings..
Specifications & Standards
| Item | Details |
|---|---|
| Grades | SS 316, SS 316L (AISI/ASTM designations) |
| Common Standards | ASTM A403 (Wrought Fittings), ASME B16.9 (Butt-weld), ASME B16.11 (Forged), EN 10253 / EN 10241 equivalents |
| Types | Elbows (LR/ SR), Tees, Reducing Tees, Reducers (Concentric / Eccentric), Caps, Couplings, Stub Ends, Crosses, Bend, Wyes |
| Construction | Seamless, Welded (butt-weld), Forged, Fabricated |
| Finishes | Pickled & Passivated, Annealed & Pickled, Polished (No.4, Mirror), Mill Finish |
Chemical Composition (Typical, wt%)
| Element | SS 316 | SS 316L |
|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 |
| 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 | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 | ≤ 0.03 |
| Nitrogen (N) | ≤ 0.11 | ≤ 0.11 |
Mechanical Properties (Typical, annealed)
| Property | Value (SS 316 / 316L) |
|---|---|
| Tensile Strength (UTS) | ≈ 480 – 620 MPa (typical ≈ 515 MPa) |
| Yield Strength (0.2% offset) | ≈ 170 – 300 MPa (typical ≈ 205 MPa) |
| Elongation | ≥ 40% (in 50 mm) |
| Hardness | Typical annealed values; varies with fabrication (HB ≤ 217 typical) |
Equivalent Grades & Standards
| Designation | SS 316 | SS 316L |
|---|---|---|
| UNS | S31600 | S31603 |
| EN / Werkstoff | 1.4401 / X5CrNiMo17-12-2 | 1.4404 / X2CrNiMo17-12-2 |
| JIS | SUS316 | SUS316L |
Dimension Chart — Common Butt-Weld Fittings (Representative)
| Nominal Pipe Size (NPS) | Typical Elbow Radius | Common Wall Thickness (Schedule) |
|---|---|---|
| ½" (15 mm) | Long Radius (1D) / Short Radius (0.5D) | SCH 10, SCH 40 |
| 1" (25 mm) | 1D / 0.5D | SCH 10, SCH 40 |
| 2" (50 mm) | 1D / 0.5D | SCH 40, SCH 80 |
| 4" (100 mm) | 1D / 1.5D (sweep) | SCH 40, SCH 80 |
| 8" (200 mm) | 1D / custom | SCH 40, SCH 80, XXS |
Applications
- Chemical processing and corrosive fluid lines
- Marine, offshore and desalination piping systems
- Food, dairy and pharmaceutical sanitary piping
- Oil & gas, refinery and petrochemical installations
- Power plants, heat exchangers and condenser systems
- Architectural plumbing and hygienic drain systems
Rose Metal Industries supports project logistics and export documentation for international buyers, including export-grade packaging, container loading plans, certificates of origin and inspection certificates. With a network of warehouses and service centers across southern India — enabling fast supplies to Hyderabad, Bengaluru, Coimbatore and beyond — we combine local availability with global-quality manufacturing to serve both single-order buyers and large turnkey projects..
Global keywords: SS316 pipe fittings, 316L fittings exporter, corrosion-resistant fittings, ASME B16.9 fittings, ASTM A403 elbows, sanitary fittings, stainless steel forged fittings, Rose Metal Industries.
Frequently Asked Questions (FAQ)
Q1: What is the difference between SS 316 and SS 316L fittings?
A: The key difference is carbon content. SS 316L has a lower maximum carbon (≤0.03%) which reduces carbide precipitation during welding and improves corrosion resistance in the weld zone. Choose 316L for welded systems where post-weld heat treatment is not feasible.
Q2: Do you provide Mill Test Certificates (MTC) and third-party inspection?
A: Yes — Rose Metal Industries issues MTCs (EN 10204 3.1) and can arrange third-party inspection, PMI/spectrochemical testing, radiography, and other required quality verifications on request.
Q3: Which standards do your pipe fittings conform to?
A: Our fittings are manufactured to customer-specified standards such as ASTM A403 (wrought), ASME B16.9 (butt-weld), ASME B16.11 (forged), and EN/DIN equivalents, depending on the fitting type and application.
Q4: Can you supply customized fittings (special radii, reducing tees, sweep bends)?
A: Yes — we supply standard stock and fabricate custom fittings to project specifications, including long-radius elbows, sweep bends, special reducers and bespoke assemblies. Contact our sales team with drawing/requirements.
Q5: Do you supply to the southern India region and export globally?
A: Yes — we supply across Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry) and the Andaman & Nicobar Islands, and export to Europe, the Middle East, Southeast Asia, Africa and the Americas with full export documentation and packing.