Stainless Steel Pipe Fittings Manufacturer, Supplier & Stockist in India
Kalpataru Piping Solution manufactures & supplies stainless steel pipe fittings. This pipe fitting is used at any pipeline systems where corrosion resistance, hygiene and pressure resistance at once is most required. It ranges SS 304, 304L, 316, 316L, 321, 321H, 347, 347H, 310, 310S, and 904L grade shaped to elbows, tees, reducers, caps, cross and stub ends at buttweld, socket weld, threaded and olet connection form. All fitting products or buy from approved vendors by ASME B16.9, ASME B16.11, ASTM A403/A182 and MSS-SP-43standard and verified for its chemical composition and mechanical characteristic.
All fitting will be supplied by Full Mill test certificate. Whether you’re specifying full-bore buttweld fittings for a refinery pipe rack or small-bore socket weld fittings for an instrumentation skid, our ready inventory across standard sizes and schedules means you’re not stuck waiting on a custom production run for a standard requirement. As a Mumbai-based manufacturer and stockist, we support EPC contractors, fabricators and MRO buyers across India and export markets with fittings that are competitively priced without cutting corners on quality. Review the specifications, grades and dimensional data below, or get in touch for a fast, no-obligation quote.
- What Are Stainless Steel Pipe Fittings
- Technical Specifications
- Types of Stainless Steel Pipe Fittings
- Chemical Composition (Typical, SS 304 / 304N / 304LN)
- Mechanical Properties (Typical, ASTM A403 Seamless Fittings)
- Dimensions & Weight Reference
- Applicable Standards
- Applications & Industries Served
- Certifications & Standards Compliance
- Manufacturing Process & Quality Control
- Packaging & Delivery
- FAQ’s About Stainless Steel Pipe Fittings
What Are Stainless Steel Pipe Fittings
Stainless steel pipe fittings are precision-formed components that join, redirect, branch or terminate flow in a piping system. Elbows change direction, tees create branch connections, reducers step between two pipe diameters, and caps or stub ends close off or terminate a run — each engineered to hold a leak-tight joint under sustained pressure, vibration and thermal cycling where carbon steel would corrode. Compared with our duplex steel pipe fittings, standard austenitic stainless grades cost less and suit a wider range of general industrial service, while duplex and super duplex step in for higher-chloride, higher-strength applications.
SS pipe fittings are broadly classified by connection method:
Category | Description |
|---|---|
Buttweld Fittings | Bevelled and welded flush with the pipe — elbows, tees, reducers, caps, stub ends. Used for 2″ NB and above in high-pressure, full-bore, critical service. |
Forged / Socket Weld Fittings | Insert-and-weld design for smaller-bore piping (1/2″ to 2″ NB), forged from bar stock for high pressure service. |
Threaded Fittings | NPT or BSP threaded connections for low-pressure, non-critical service and instrumentation lines. |
Olet Fittings | Branch connections welded directly onto the run pipe, eliminating the need for a reinforcement pad. |
Stainless Steel Pipe Fittings Material Grades
Technical Specifications
Parameter | Specification |
|---|---|
Grades Available | SS 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 347, 347H, 310, 310S, 446, 904L |
Governing Standards | ASME B16.9, ASME B16.11, ASME B16.28, ASTM A182/A403, MSS SP-43/83/97, DIN 2605/2615/2616, BS 3799 |
Size Range | 1/2″ NB to 48″/72″ NB (buttweld/welded); seamless typically 4″ to 72″ |
Pressure Ratings | Class 150 to Class 2500; forged fittings Class 3000# to 9000# |
Wall Thickness / Schedule | SCH 5S, 10S, 40S, 80S, 160, XXS |
Bending Radius | 1D, 2D, 3D, 5D |
Manufacturing Methods | Forging, Rolling, Casting; Seamless, Fabricated, Welded |
End Connections | Threaded (NPT/BSP), Socket Weld, Buttweld, Flanged, Plain End |
Surface Finish | Mill finish, Pickled, Passivated, Polished (Ra 0.8 to Ra 3.2) |
Testing Conducted | Hydrotest, PMI, NDT (RT/UT), IGC, Hardness, HIC, Visual & Dimensional Inspection |
Documentation | EN 10204 3.1 MTC standard; 3.2 (TPI-witnessed) on request |
Types of Stainless Steel Pipe Fittings
Buttweld Fittings
Fitting | Typical Use |
|---|---|
90° / 45° Long & Short Radius Elbow | Directional change in pipe run |
Equal Tee & Reducing Tee | Branch connection, same or reduced outlet size |
Concentric & Eccentric Reducer | Step-down/up between two pipe diameters |
End Cap / Stub End | Terminates a run or pairs with a lap-joint flange |
Return Bend / Cross | 180° flow reversal or multi-directional branch connection |
Forged, Socket Weld, Threaded & Olet Fittings
Fitting | Typical Use |
|---|---|
Socket Weld Elbow, Tee & Cross | Small-bore (1/2″-2″), high-pressure directional and branch connections |
Full / Half / Reducing Coupling | In-line or reducing joint between two pipes |
Threaded Elbow, Tee, Nipple, Plug & Bushing | Low-pressure, non-critical and instrumentation lines |
Weldolet / Sockolet / Threadolet | Branch connection welded directly onto the run pipe without a reinforcement pad |
Elbolet / Nipolet / Latrolet | Specialised branch outlets for angled or offset connections |
Chemical Composition (Typical, SS 304 / 304N / 304LN)
Element | SS 304 (%) | SS 304N (%) | SS 304LN (%) |
|---|---|---|---|
Carbon (C) | Max 0.08 | Max 0.08 | Max 0.035 |
Chromium (Cr) | 18.0-20.0 | 18.0-20.0 | 18.0-20.0 |
Nickel (Ni) | 8.0-11.0 | 8.0-11.0 | 8.0-11.0 |
Manganese (Mn) | Max 2.00 | Max 2.00 | Max 2.00 |
Silicon (Si) | Max 0.75 | Max 0.75 | Max 0.75 |
Phosphorus (P) | Max 0.040 | Max 0.040 | Max 0.040 |
Sulfur (S) | Max 0.030 | Max 0.030 | Max 0.030 |
Nitrogen (N) | – | 0.10-0.16 | 0.10-0.16 |
Iron (Fe) | Balance | Balance | Balance |
Note: SS 304N and 304LN contain controlled nitrogen for enhanced strength; 304LN also has lower carbon to reduce the risk of intergranular corrosion. Grade-specific data sheets for 316L, 321, 347, 904L and duplex grades are available on request.
Mechanical Properties (Typical, ASTM A403 Seamless Fittings)
Property | Value | Benefit |
|---|---|---|
Density | 8.0 g/cm³ | Predictable weight for handling and BOM planning |
Melting Temperature | Approx. 1400°C (2550°F) | Retains integrity in high-heat service |
Tensile Strength | 75,000 psi (515 MPa) | Resists pulling and stretching under load |
Yield Strength (0.2% Offset) | 30,000 psi (205 MPa) | Maintains shape under sustained pressure |
Elongation at Break | 35% | Flexibility without brittle failure |
Dimensions & Weight Reference
Buttweld Elbow — Sample Dimensions (ASME B16.9)
Nominal Size (in) | O.D. (mm) | 90° LR Elbow C-F (in) | 45° LR Elbow C-F (in) | 180° Return C-C (in) |
|---|---|---|---|---|
1/2″ | 21.3 | 1 1/2 | 5/8 | 1 7/8 |
1″ | 33.4 | 1 1/2 | 7/8 | 2 3/16 |
2″ | 60.3 | 3 | 1 3/8 | 6 |
4″ | 114.3 | 6 | 2 1/2 | 12 |
6″ | 168.3 | 9 | 3 3/4 | 18 |
12″ | 323.9 | 18 | 7 1/2 | 36 |
Schedule Wall Thickness Reference (Sample)
Pipe Size | SCH 40 (in) | SCH 80 (in) | SCH 160 (in) |
|---|---|---|---|
1/2″ | 0.109 | 0.147 | 0.218 |
2″ | 0.154 | 0.218 | 0.400 |
4″ | 0.237 | 0.337 | 0.531 |
8″ | 0.322 | 0.500 | 0.750 |
12″ | 0.406 | 0.562 | 1.000 |
Full dimensional and weight charts (elbow, tee, reducer, cap, cross) across all sizes and schedules are available on request or as a downloadable technical data sheet.
Applicable Standards
Standard | Applies To | Scope |
|---|---|---|
ASTM A182 / ASME SA182 | Forged Fittings (SW, Threaded) | Material grades, mechanical properties, chemical composition for forged products |
ASTM A403 / ASME SA403 | Buttweld Fittings | Wrought austenitic SS piping fittings — grades, testing, heat treatment |
ASME B16.9 | Buttweld Fittings | Factory-made wrought buttwelding fittings — dimensions, tolerances, pressure ratings |
ASME B16.11 | Forged Fittings (SW, Threaded) | Ratings, dimensions, tolerances for socket weld & threaded fittings |
ASME B16.28 | Short Radius Elbows & Returns | Wrought steel short radius elbow and return bends |
MSS SP-43 | Buttweld Fittings (Low Pressure) | Wrought & fabricated butt-welding fittings for low pressure, corrosion-resistant applications |
MSS SP-97 | Olet Fittings | Integrally reinforced forged branch outlet fittings — weldolet, sockolet, threadolet |
DIN 2605 / 2615 / 2616 | Buttweld Fittings | European standard for buttweld elbows, tees and reducers |
Applications & Industries Served
Industry | Where SS Fittings Are Used |
|---|---|
Oil & Gas | Pipelines and process piping in upstream and downstream operations |
Petrochemical & Refineries | Corrosive process lines and heat exchanger piping |
Power Generation | Condensers, feedwater and high-temperature systems |
Water & Waste Treatment | Corrosion-resistant piping for treatment plants and municipal infrastructure |
Food & Beverage | Hygienic, non-contaminating fluid transfer lines |
Pharmaceutical & Biotech | Sanitary process piping meeting strict cleanliness standards |
Marine & Shipbuilding | Saltwater-resistant piping for vessels and offshore structures |
LNG & Cryogenic Systems | Reliable performance at sub-zero temperatures |
For higher-chloride or higher-strength requirements beyond standard austenitic grades, see our duplex steel pipe fittings and super duplex steel pipe fittings. For extreme corrosion or high-temperature service, our nickel pipe fittings, monel pipe fittings and inconel pipe fittings ranges may be a better fit.
Certifications & Standards Compliance
Certification / Standard | Coverage |
|---|---|
ISO 9001:2015 | Quality Management System |
ASME B16.9 / B16.11 | Dimensional accuracy, tolerances and pressure ratings for buttweld and forged fittings |
ASTM A182 / A403 | Material grade, chemical composition, mechanical properties for forged and wrought fittings |
PED 2014/68/EU | Approved for use in EU pressure equipment applications |
NACE MR0175 / ISO 15156 | Corrosion-resistant grades qualified for sour service environments |
IBR (Indian Boiler Regulations) | IBR-certified fittings available for Indian power and process plant projects |
EN 10204 3.1 / 3.2 | Mill test certificates standard with all deliveries; 3.2 TPI-witnessed on request |
Manufacturing Process & Quality Control
Step | Process Stage | What Happens |
|---|---|---|
1 | Raw Material Selection | Certified stainless steel billets/plates sourced from approved mills |
2 | Forming | Forging, rolling or casting to the required fitting geometry |
3 | Heat Treatment | Solution annealing to restore ductility and relieve forming stress |
4 | Surface Finishing | Pickling, passivation or polishing to specified Ra finish |
5 | Bevelling | Edge preparation to ASME B16.25 for weld-ready fittings |
6 | Final Inspection | Visual, dimensional, PMI, hydrostatic and radiographic testing before packing |
Packaging & Delivery
All fittings are packed in wooden corrugated boxes with plastic and bubble-wrap protection; end caps applied to pipe ends on request. Full documentation — MTC, COC, IBR certificate and PMI report — is included with every consignment. We supply pan-India and export to multiple countries across Asia, the Middle East, Europe and the Americas, with export documentation prepared in advance to avoid customs delays.
Stainless Steel Pipe Fittings Price List
The price of stainless steel pipe fittings depends on the grade, size, fitting type, wall thickness, and quantity required. SS 304 and SS 316 fittings are commonly available in elbows, tees, reducers, crosses, caps, unions, and couplings. For the latest price, contact the supplier with your required specifications and quantity to receive an accurate quotation.
FAQ’s About Stainless Steel Pipe Fittings
We supply SS pipe fittings in grades including 304, 304L, 304H, 316, 316L, 316H, 321, 321H, 310, 310S, 347, and 904L to suit various industrial applications.
Our range includes elbows (45° & 90°), tees, reducers (concentric & eccentric), long radius bends, cross fittings, pipe caps, stub ends, and pipe bends.
We offer both seamless and welded butt weld fittings, manufactured according to ASME, ANSI, and ASTM standards.
Our fittings are widely used in oil & gas, petrochemical, power plants, marine, water treatment, irrigation, construction, and other industrial sectors.
They provide excellent corrosion resistance, high durability, leak-tight joints, chemical resistance, low maintenance, and long service life under high pressure and extreme conditions.