Comprehensive Overview of Bronze Elbows, Tees, Reducers and Bronze Pipe Fittings
We are one of the leading manufacturers and exporters of Bronze Elbows, Bronze Tees, Bronze Reducers, and comprehensive Bronze Pipe Fittings from India. We have been supplying high-quality bronze 90-degree elbows, bronze 45-degree elbows, bronze street elbows, bronze tees, bronze reducing tees, bronze reducers, bronze wye fittings, and custom bronze fittings to the world market for many decades. Our state-of-the-art facility specializes in producing premium bronze fittings using advanced sand casting, investment casting, CNC machining, pressure testing, and comprehensive quality control. With over three decades of experience in bronze fitting manufacturing, we serve diverse industries including marine and shipbuilding, offshore platforms, industrial process piping, HVAC and refrigeration, chemical plants, power generation, desalination, pump installations, and oil and gas applications. Our expertise encompasses working with various bronze alloys including Bronze C83600 (SAE 660) for economical applications, Bronze C90700 (Tin Bronze) for superior seawater resistance, Aluminum Bronze C95400 for high-strength marine applications up to 600 PSI, Manganese Bronze C86300 for wear resistance, and Silicon Bronze C87300 for marine hardware. We manufacture bronze fittings ranging from 1/4 inch to 8 inch nominal pipe sizes (DN8 to DN200) including 90-degree and 45-degree elbows, straight and reducing tees, concentric and eccentric reducers, street elbows, all maintaining pressure ratings 150-600 PSI, precise NPT, BSP, or socket weld connections, excellent corrosion resistance, compliance with ASTM B62, ASTM B584, ASME B16.15 standards, and reliable 20-50+ year service life.
Bronze Elbows – Directional Change Fittings
Bronze Elbows are cast bronze fittings designed to change piping direction at 90-degree or 45-degree angles, providing superior seawater corrosion resistance, available in threaded or socket connections, sizes 1/4″ to 6″, pressure ratings 150-600 PSI.
Bronze Elbow Types
90-Degree Bronze Elbows: Standard right-angle fittings, short radius (R = 1.0× diameter) compact design, long radius (R = 1.5× diameter) reduced pressure drop, threaded NPT/BSP or socket weld connections, applications in ship cooling, offshore piping, industrial process lines, pump systems.
45-Degree Bronze Elbows: Gradual 45-degree change, 30-40% less pressure drop versus 90-degree, reduced flow turbulence, ideal for high-flow applications and pump suctions, sizes 1/4″ to 4″, marine engine rooms, process equipment, refrigeration systems.
Bronze Street Elbows: One female and one male threaded end, space-saving eliminating nipple requirement, compact tight space installations, sizes 1/4″ to 2″, marine compartments, pump installations, valve manifolds, instrumentation panels.
Reducing Bronze Elbows: Combine directional change with size reduction, eliminates separate reducer, common sizes 1/2″ × 3/8″ to 4″ × 3″, manifold branches, equipment connections, distribution systems.
Long Radius Bronze Elbows: Centerline radius = 1.5× diameter, 30-40% lower pressure drop, minimized turbulence and erosion, sizes 1″ to 6″, cooling water systems, pump suctions, marine propulsion, industrial pumping.
Bronze Elbow Specifications
| Size | Center-to-End 90° | Wall Thickness | Pressure Rating | Weight (kg) | Alloys Available |
|---|---|---|---|---|---|
| 1/4″ | 22mm | 3.5-4.5mm | 300 PSI | 0.05 | C83600, C90700 |
| 1/2″ | 29mm | 4.5-5.5mm | 300 PSI | 0.12 | C83600, C90700 |
| 1″ | 38mm | 5.5-7.0mm | 300 PSI | 0.30 | C83600, C90700, C95400 |
| 1-1/2″ | 54mm | 6.5-8.0mm | 300 PSI | 0.70 | C83600, C90700, C95400 |
| 2″ | 64mm | 7.0-9.0mm | 300 PSI | 1.10 | C83600, C90700, C95400 |
| 3″ | 89mm | 9.0-11.0mm | 150 PSI | 2.50 | C83600, C90700, C95400 |
| 4″ | 114mm | 10.0-13.0mm | 150 PSI | 4.50 | C83600, C90700, C95400 |
| 6″ | 165mm | 12.0-16.0mm | 150 PSI | 9.50 | C83600, C95400 |
Bronze Tees – Branch Connection Fittings
Bronze Tees are three-way fittings creating branch connections in piping systems, available as straight tees (all outlets same size) or reducing tees (branch smaller than run), threaded or socket connections, pressure ratings 150-300 PSI.
Bronze Tee Types
Straight Bronze Tees: All three outlets same size, 90-degree branch from main line, equal flow distribution, NPT/BSP threaded or socket weld, sizes 1/4″ to 6″, distribution manifolds, cooling water branches, instrumentation taps, chemical feed, compressed air, hydraulic systems.
Reducing Bronze Tees: Branch outlet smaller than run size, combines tee and reducer functions, space and cost savings, common configurations 1″ × 1″ × 3/4″, 2″ × 2″ × 1″, 3″ × 3″ × 2″, manifold connections, equipment sizing, instrument connections, sampling ports.
Bronze Service Tees: Mixed male/female thread combinations, direct connections saving nipples, equipment manifolds, control panels, sizes 1/4″ to 1-1/2″, instrument air, hydraulic manifolds, fuel distribution, lubrication systems.
Bronze Wye Fittings: Y-shaped with 45-degree branch angle, reduced flow resistance versus 90-degree, smoother flow and lower pressure drop, drainage applications, pump manifolds, sizes 1″ to 6″, drain systems, vent piping, process headers.
Bronze Tee Specifications
| Size (Run × Run × Branch) | Center-to-End | Wall Thickness | Pressure Rating | Weight (kg) |
|---|---|---|---|---|
| 1/2″ × 1/2″ × 1/2″ | 29mm | 4.5-5.5mm | 300 PSI | 0.18 |
| 1″ × 1″ × 1″ | 38mm | 5.5-7.0mm | 300 PSI | 0.45 |
| 1″ × 1″ × 3/4″ (Reducing) | 38mm/32mm | 5.5-7.0mm | 300 PSI | 0.40 |
| 1-1/2″ × 1-1/2″ × 1-1/2″ | 54mm | 6.5-8.0mm | 300 PSI | 0.90 |
| 2″ × 2″ × 2″ | 64mm | 7.0-9.0mm | 300 PSI | 1.50 |
| 2″ × 2″ × 1″ (Reducing) | 64mm/38mm | 7.0-9.0mm | 300 PSI | 1.30 |
| 3″ × 3″ × 3″ | 89mm | 9.0-11.0mm | 150 PSI | 3.20 |
| 4″ × 4″ × 4″ | 114mm | 10.0-13.0mm | 150 PSI | 6.00 |
Bronze Reducers – Size Transition Fittings
Bronze Reducers connect different pipe sizes, available as concentric (centerlines aligned) or eccentric (one side flat), preventing air pockets or sediment, threaded or socket connections, sizes 1/2″ × 3/8″ to 6″ × 4″, pressure ratings 150-300 PSI.
Bronze Reducer Types
Concentric Bronze Reducers: Conical shape with aligned centerlines, symmetrical reduction, vertical piping applications, pump discharge, pressure vessel nozzles, sizes 1/2″ × 3/8″ to 6″ × 4″, threaded or socket, vertical risers, equipment nozzles, tank connections.
Eccentric Bronze Reducers: Offset centerlines maintaining flat side, prevents air pockets in horizontal lines, maintains bottom/top flow alignment, preferred for pump suctions (flat bottom) and drains, sizes 3/4″ × 1/2″ to 6″ × 4″, pump suction piping, gravity drains, cooling water, condensate return.
Bronze Reducing Couplings: Straight with internal reduction, female threads both ends different sizes, compact space-saving design, sizes 1/4″ × 1/8″ to 2″ × 1-1/2″, instrumentation, equipment connections, branch reductions, gauge installations.
Bronze Hex Reducing Bushings: Male external, female internal smaller size, hexagonal wrench flats, eliminates coupling, sizes 1″ × 3/4″ to 4″ × 3″, manifolds, valve reductions, equipment adapters, tank fittings.
Bronze Reducer Specifications
| Size (Inlet × Outlet) | Length | Pressure Rating | Weight (kg) | Configuration |
|---|---|---|---|---|
| 3/4″ × 1/2″ | 38mm | 300 PSI | 0.08 | Concentric/Eccentric |
| 1″ × 3/4″ | 48mm | 300 PSI | 0.15 | Concentric/Eccentric |
| 1-1/2″ × 1″ | 64mm | 300 PSI | 0.35 | Concentric/Eccentric |
| 2″ × 1-1/2″ | 76mm | 300 PSI | 0.55 | Concentric/Eccentric |
| 2″ × 1″ | 89mm | 300 PSI | 0.50 | Concentric/Eccentric |
| 3″ × 2″ | 102mm | 150 PSI | 1.20 | Concentric/Eccentric |
| 4″ × 3″ | 127mm | 150 PSI | 2.40 | Concentric/Eccentric |
| 6″ × 4″ | 178mm | 150 PSI | 5.50 | Concentric/Eccentric |
Bronze Alloys for Marine and Industrial Fittings
Bronze Alloy Specifications
Bronze C83600 (SAE 660): 85% Cu, 5% Sn, 5% Pb, 5% Zn, tensile strength 230-260 MPa, excellent castability and machinability, good corrosion resistance freshwater/mild saltwater, 15-25 year service life, most economical, pressure rating 300 PSI, baseline cost.
Bronze C90700 (Tin Bronze): 88% Cu, 10% Sn, 2% Zn, tensile strength 275-310 MPa, superior continuous seawater resistance <0.02 mm/year corrosion, 30-50+ year service life, critical marine applications, premium 20-30% over C83600.
Aluminum Bronze C95400: 85% Cu, 11% Al, 4% Fe, tensile strength 620 MPa (2.5× stronger than C83600), outstanding seawater resistance, excellent cavitation resistance, 40-60+ year service life, high-pressure up to 600 PSI, premium 40-60% over C83600.
Manganese Bronze C86300: 63% Cu, 25% Zn, 6% Mn, 4% Fe, 1% Al, tensile strength 550 MPa, high strength with good corrosion resistance, excellent wear resistance, high-strength valves and mechanical components.
Silicon Bronze C87300: 96% Cu, 3% Si, tensile strength 380 MPa, excellent corrosion resistance and weldability, marine hardware and architectural applications, attractive appearance.
Material Selection Guide
| Application | Recommended Alloy | Service Life | Cost Factor |
|---|---|---|---|
| Freshwater Systems | C83600 | 20-30 years | Standard |
| Ship Seawater Cooling | C90700 or C95400 | 30-50 years | +20-30% or +40-60% |
| Offshore Platforms | C90700 or C95400 | 30-50 years | +20-30% or +40-60% |
| High Pressure (>300 PSI) | C95400 | 40-60 years | +40-60% |
| Pump Suction/Discharge | C95400 | 40-60 years | +40-60% |
| Coastal Industrial | C83600 or C90700 | 20-40 years | Standard or +20-30% |
| Desalination Plants | C90700 or C95400 | 30-60 years | +20-30% or +40-60% |
| HVAC Chilled Water | C83600 | 20-30 years | Standard |
Manufacturing and Quality Control
Bronze Casting Methods
Sand Casting: Green sand or resin-bonded molds, sizes 1/4″ to 8″+, economical for 100-10,000+ pieces, wall thickness 3-15mm, tolerance ±1.5-3.0mm as-cast, most common method for bronze fittings.
Investment Casting: Wax pattern/ceramic shell precision, excellent finish and accuracy ±0.5-1.0mm, sizes 1/4″ to 3″, complex geometries, higher tooling cost but superior quality for small precision fittings.
Permanent Mold Casting: Reusable metal molds, better consistency ±1.0-2.0mm, faster production, economical for >10,000 pieces annually, standard elbows and tees.
CNC Machining and Testing
Thread Machining: CNC lathes cutting NPT per ASME B1.20.1 or BSP per ISO 7/ISO 228, tolerance Class A external, Class B internal, thread inspection Go/No-Go gauges.
Socket Preparation: Precision boring per ASME B16.18, socket depth allowing 1.6mm expansion gap, ID matching pipe OD within 0.1-0.2mm, surface finish Ra 3.2-6.3 μm.
Pressure Testing: 100% hydrostatic testing to 1.5-2× rated pressure, typical test: 450 PSI for 300 PSI rated, 300 PSI for 150 PSI rated, 900 PSI for 600 PSI aluminum bronze, hold time 30-60 seconds, visual leak inspection, test certificates provided.
Material Verification: OES spectrometry verifying composition within ASTM ±1%, hardness testing Brinell/Vickers, tensile testing per ASTM B505, heat number traceability.
Dimensional Inspection: CMM inspection ±0.005mm accuracy, thread gauges for NPT/BSP, center-to-end verification, wall thickness ultrasonic testing, angle measurement for elbows.
Applications by Industry
Marine and Shipbuilding
Bronze elbows 2″-6″ for seawater cooling systems, bronze tees for branch cooling to engines/generators, bronze reducers at equipment inlets, commercial vessels, naval ships, yachts, workboats, 25-40 year service life continuous seawater.
Offshore and Coastal Industrial
Offshore platform utility water, fire suppression seawater mains 3″-6″, coastal power plant cooling intake, desalination seawater intake/brine discharge, marine terminals dock systems, 30-40 year service life aggressive marine environment.
Industrial Process and Chemical
Chemical plant cooling water, food/beverage process cooling, pulp/paper mill water systems, mining slurry transport (abrasion-resistant alloys), dewatering pumps, mineral processing, corrosion and abrasion resistance.
HVAC and Building Systems
Commercial building chilled water distribution 1″-6″, cooling coil connections, fan coil piping, industrial refrigeration ammonia/brine circuits, geothermal ground loops, solar thermal collectors, thermal cycling resistance.
Municipal and Water Treatment
Coastal water treatment plant process piping, filtration equipment, chemical dosing, commercial pool circulation systems, fire protection sprinklers (where approved), chlorinated water resistance.
Technical Standards
ASTM Material Standards
ASTM B62: Bronze C83600 composition and properties, most common standard North America. ASTM B584: Multiple bronze alloys C83600, C90700, C95400, C86300 specifications. ASTM B505: Mechanical property testing procedures.
ASME Dimensional Standards
ASME B16.15: Cast bronze threaded fittings Classes 125 and 250, dimensions for elbows, tees, reducers, pressure-temperature ratings up to 300 PSI. ASME B16.18: Socket weld bronze fittings, socket dimensions and pressure ratings. ASME B1.20.1: NPT pipe threads. ISO 4144: International standard for bronze fittings.
Marine Standards
MIL-DTL-16420: Naval vessel bronze fittings. ABS, Lloyd’s Register, DNV-GL: Marine classification society approvals.
Advantages of Bronze Over Alternative Materials
Superior Seawater Resistance: Bronze 20-50+ years versus brass 3-10 years (dezincification failure), corrosion rate <0.02 mm/year versus carbon steel 0.1-0.5 mm/year, no coatings required.
No Dezincification: Bronze maintains integrity unlike brass which loses zinc in aggressive water, critical for hot water, soft water, chlorinated water, eliminates sudden failure risk.
High Strength: Bronze 230-620 MPa depending on alloy, aluminum bronze 620 MPa enables 600 PSI pressure rating, thicker walls possible, reduced catastrophic failure risk.
Temperature Range: Bronze maintains properties -100°C to +200°C, suitable for cryogenic and high-temperature, no brittle failure at low temperatures.
Fire Safety: Completely non-combustible unlike plastics, maintains integrity in fire, no toxic fumes, preferred for fire suppression, fuel systems, engine rooms.
Cavitation Resistance: Aluminum bronze particularly resistant to cavitation in pumps, withstands high-velocity flow, suitable for pump fittings and high-flow systems.
Installation Guidelines
Material Selection: C83600 freshwater/mild saltwater, C90700 continuous seawater, C95400 high-pressure >300 PSI and critical applications.
Thread Installation: PTFE tape 3-4 wraps or pipe sealant, tighten 1-2 turns past hand-tight, avoid over-tightening bronze castings, use wrench on hex flats not threads.
Socket Joints: Clean surfaces, apply flux, insert pipe leaving 1.6mm gap, heat uniformly, apply brazing alloy (BCuP-2, BCuP-5), allow natural cooling.
System Design: Use 45-degree elbows for lower pressure drop, long radius reduces drop 30%, minimize fittings in high-flow, provide expansion loops for long runs, support at 3-meter intervals.
Corrosion Prevention: Dielectric unions between bronze and dissimilar metals, prevent galvanic corrosion, proper grounding, cathodic protection for submerged seawater.
Why Choose Our Bronze Fitting Manufacturing
Three Decades of Excellence
Established 1990: 30+ years manufacturing bronze fittings for marine, offshore, industrial across 45+ countries. Track Record: 15+ million fittings delivered, 99% on-time delivery, <0.5% defect rate, 20-40 year documented service life. Certifications: ISO 9001:2015, ASTM B62/B584 compliance, ASME B16.15/B16.18 standards, ABS Type Approval.
Comprehensive Bronze Alloy Capabilities
Multiple alloys available: C83600 economical, C90700 superior seawater, C95400 high-strength up to 600 PSI, C86300 wear-resistant, C87300 marine hardware. Premium ingots from certified suppliers, spectrographic analysis ±1%, heat number traceability.
Advanced Manufacturing
Casting: Sand casting 50,000-100,000 fittings/month, investment casting 10,000-20,000/month, permanent mold for high-volume, pattern shop for custom designs. CNC Machining: 20+ CNC lathes for threading NPT/BSP, socket boring, precision operations. Pressure Testing: Multiple test benches to 1000 PSI, automated sequences, test certificates provided.
Quality Control
Material Testing: OES spectrometer, tensile testing ASTM B505, hardness testing, metallographic analysis. Dimensional Inspection: CMM ±0.005mm accuracy, thread gauge sets, center-to-end verification, ultrasonic wall thickness. Pressure Testing: 100% testing to 1.5-2× rated pressure. NDT: X-ray radiography, ultrasonic testing, liquid penetrant.
Engineering Support
Application engineering for selection, corrosion assessment, pressure/flow calculations, material recommendations. Custom design for non-standard sizes, special angles, combination fittings, proprietary designs. Prototyping 3-4 weeks with testing and iteration support.
Competitive Pricing
Cost Advantage: 30-40% savings versus European foundries, 25-35% versus North American. Volume Pricing: 100-1,000 pieces: 15-20% discount, 1,000-10,000: 20-30%, >10,000: 30-40%, blanket orders: additional 5-10%. Transparent Costing: Detailed breakdowns, no hidden fees.
Global Export and Delivery
Worldwide Shipping: North America (30%), Europe (25%), Middle East (20%), Asia-Pacific (15%), South America (10%). Logistics: Air freight 5-10 days, sea freight 25-45 days, customs support. Documentation: Commercial invoice, packing list, certificate of origin, material certificates, test certificates, REACH/RoHS declarations. Lead Times: Stock items 1-2 weeks, custom casting 5-8 weeks, large orders 6-10 weeks. On-Time: 99% performance over 5 years.
Frequently Asked Questions
Q1: What is the difference between bronze and brass fittings for marine use? Bronze provides superior seawater resistance with 20-50 year service life versus brass which dezincifies in 3-10 years. Bronze C90700 (88% Cu, 10% Sn) forms protective tin oxide layer, corrosion <0.02 mm/year. Brass loses zinc creating porous weak structure. For seawater and marine applications bronze is essential despite 40-60% higher cost. Lifecycle cost favors bronze avoiding failures, repairs, downtime.
Q2: Which bronze alloy should I select? C83600: Most economical, freshwater/brackish/mild saltwater, 300 PSI, 20-25 years, baseline cost. C90700: Superior seawater, continuous immersion, critical marine, 30-50 years, +20-30% cost. C95400: Highest strength 620 MPa, 600 PSI pressure, pumps/offshore, 40-60 years, +40-60% cost. Consult our engineers with application details for recommendation.
Q3: What pressure ratings are available? Class 125 (150 PSI): Low-pressure, sizes 2-1/2″-6″, water distribution, HVAC, 100-125 PSI operating. Class 250 (300 PSI): High-pressure, sizes 1/4″-4″, process piping, pumps, 200-250 PSI operating. Aluminum Bronze: Up to 600 PSI for high-pressure pumps, offshore, thick-wall castings. Ratings derate with temperature – include 2-3× safety factor for water hammer.
Q4: Are bronze fittings suitable for potable drinking water? Yes, bronze approved for potable water under various standards. Lead-free bronze (<0.25% Pb) meets NSF/ANSI 61 (North America) and EN 1982 (Europe). Standard bronze C83600 (4-6% lead) acceptable in many markets but being phased out. Bronze does not dezincify maintaining integrity in hot water, soft water, chlorinated water. We provide material certificates and compliance declarations. Consult local regulations.
Q5: What are typical lead times and minimum order quantities? Stock Items (1/2″-2″ common sizes): 1-2 weeks, MOQ 50-100 pieces. Custom Casting: 5-8 weeks including pattern, casting, machining, testing, MOQ 200-1,000 pieces. Large Orders (>5,000): 6-10 weeks dedicated production, volume discounts 20-40%. Expedited: 4-5 weeks with surcharge. Lead time varies by alloy – C83600 shortest, aluminum bronze longer.
Contact Us Today – Request Quote for Bronze Fittings
Ready to discuss your bronze elbows, tees, reducers requirements for marine systems, offshore platforms, industrial piping, or HVAC applications?
Request a Quote: Send specifications including type (elbow/tee/reducer), size, angle, connection (NPT/BSP/socket), bronze alloy, quantity, pressure rating to sales@jambrass.com for quotation within 24 hours.
Engineering Support: Email application details for material selection, pressure calculations, corrosion assessment, custom design support.
Call Us: +91-22-43449300 / +91-22-43449323 (Monday-Saturday, 9:00 AM – 6:00 PM IST)
Office Address: 1406, 14th Floor, Dalamal Tower, Nariman Point, Mumbai – 400021, Maharashtra, India
Factory Address: Plot 10B, GIDC Industrial Estate, Shanker Tekari, Udyognagar, Jamnagar, Gujarat, India – 361004
Contact Person: Mr. Mehul Vora
