Brass Pipe Fittings
Metracore Alloys Private Limited supplies Brass Pipe Fittings to fabricators, plumbing contractors and process plants across India and export markets. The range covers elbows, tees, reducers, couplings, caps, unions, adapters, threaded patterns and compression patterns in copper-zinc grades such as C36000, C37700, C46400, and C46500. Brass holds a working balance of machinability, corrosion resistance and mechanical strength. That combination keeps it in service across water supply lines, HVAC circuits, gas piping and general fluid handling wherever the grade suits the medium and the operating conditions. Fittings are supplied to ASME B16.15 and ASME B16.18 dimensions where the enquiry calls for them, with both standards specifying cast copper alloys and permitting wrought substitution only for plugs, bushings, caps and couplings in small sizes. The wrought grades listed here are certified to their own material specifications: ASTM B16/B16M for C36000 rod, ASTM B21/B21M for naval brass rod and bar, ASTM B124/B124M for forging stock, and ASTM B283/B283M for hot-pressed die forgings. EN and ISO specifications are applied when a project is written to those systems.
What are Brass Pipe Fittings?
Brass pipe fittings are threaded and compression connectors that join, branch, reduce, or close pipe runs carrying water, gas, compressed air, and light oils. Brass itself is a copper-zinc alloy; copper consists of between 58% and 63% in our machining and forging grades, with zinc making up the balance, apart from small lead and iron additions. Brass doesn’t rust, since it contains almost no iron, and the surface takes on a thin protective patina. Its main corrosion risk is dezincification, where zinc leaches selectively from the alloy in hot, soft, or chlorinated water. DZR grades address this directly.
Parallel threads carry no sealing function themselves and seal against a washer, O-ring, or bonded seal at a flat face. Taper threads seal on the thread flanks as they wedge together. Compression joints seal through an olive squeezed onto the tube. Machinists rate free-cutting brass at 100 on the machinability index, the reference point for the whole scale, so threads cut cleanly and tool life stays long. Decades of service are normal in non-aggressive water for a correctly installed fitting; soft, hot, or heavily chlorinated supplies call for DZR grades.
Why Choose Metracore Alloys Private Limited for Brass Pipe Fittings?
Metracore Alloys Private Limited is a trusted manufacturer and exporter of flanges, forgings, fasteners and fittings, with brass pipe fittings running alongside bars, filler wires and welding electrodes. Material carries test certification. Each lot clears chemical and dimensional inspection before dispatch, ships domestically or for export, and comes packed to suit the transit route. Custom sizes, thread forms and finishes are produced against the drawing. Send your size list and grade requirements for a quotation.
- Brass Pipe Fittings Specification
- Types of Brass Pipe Fittings
- Brass Pipe Fittings Grades
- Equivalent Grades of Brass Pipe Fittings
- Brass Pipe Fittings Chemical Composition
- Brass Pipe Fittings Mechanical Properties
- Manufacturing Process of Brass Pipe Fittings
- Brass Pipe Fittings Application
- Available Standards
Technical Specifications
Material Standard
C36000, C37700, C46400, CW602N (DZR)
Brass Standards
ASTM B16 (free-cutting rod), ASTM B124 (forging rod and bar)
Product Types
Elbow, tee, coupling, union, reducer, adapter, nipple, cross, plug, compression fittings
Sizes Range
1/8" to 4" (DN 6 to DN 100)
Pressure Rating
PN16 and PN25, size- and temperature-dependent
Surface Finish
Natural, nickel-plated, chrome-plated
Certification
EN 10204 3.1 Mill Test Certificate; ISO-certified quality system
Testing
Spectrometric analysis, thread gauging, hydrostatic leak testing
Types of Brass Pipe Fittings
Ten patterns account for most demand: elbows, tees, reducers, couplings, caps, unions, adapters, threaded fittings, compression fittings and forged fittings.
Brass Elbows
Brass Tees
Brass Reducers
45° Elbow
Reducing Tee
Brass Couplings
Concentric Reducer
Bend
Reach out to Metracore Alloys Private Limited for reliable Brass Pipe Fittings
Brass Pipe Fittings Grades
Four copper-zinc grades cover most enquiries. The choice turns on machinability, forgeability or saline exposure.
Brass C36000
C36000 is the free-cutting brass covered by ASTM B16/B16M, holding 60 to 63% copper with 2.5 to 3.0% lead. Its machinability rating of 100 is the benchmark other copper alloys are rated against.
Brass C37700
Forging brass C37700 runs at 58 to 61% copper with 1.5 to 2.5% lead. It hot-forges cleanly under ASTM B283, which suits fittings that need sound grain flow.
Brass C46400
Known widely as Naval Brass, C46400 adds 0.5 to 1.0% tin to a base of 59 to 62% copper. The tin slows dezincification in saline water, so marine and coastal fittings specify it.
Brass C46500
C46500 is the arsenical naval brass, carrying 0.02 to 0.06% arsenic alongside the same tin addition, with copper at 59 to 62% and lead held to 0.20% max.
The table sets out the parameters buyers confirm before releasing an order.
Parameter | Details |
Material | Brass / Copper-Zinc Alloy |
Grades | C36000, C37700, C46400, C46500 |
Types | Elbows, Tees, Reducers, Caps, Couplings, Unions, Adapters |
Size | 1/8″ to 4″ NPS (DN 6 to DN 100) |
Connection | Threaded, Compression |
Thread Type | BSP, BSPT, NPT |
Standards | ASME B16.15, ASME B16.18, ASTM B16, ASTM B124, ASTM B283, EN, ISO |
Manufacturing | Forged, Machined, Cast |
Surface Finish | Natural brass, polished, nickel-plated |
Testing | Chemical analysis, dimensional inspection, pressure testing |
Brass Pipe Fittings Standards
No single standard governs every brass fitting. The applicable specification follows the alloy, the fitting type, the manufacturing route and the intended service. ASME B16.15 applies to cast copper alloy threaded fittings in Classes 125 and 250, and ASME B16.18 covers cast copper alloy solder joint pressure fittings; both specify cast alloys, with limited wrought substitution under B16.15. On the material side, ASTM B16/B16M governs free-cutting brass rod in C36000 and C36010, ASTM B21/B21M governs naval brass rod and bar including C46400, ASTM B124/B124M covers forging rod including C37700 and C46400, and ASTM B283/B283M covers hot-pressed die forgings including C37700, C46400 and C46500. EN and ISO documents apply to projects written to those systems.
Key Benefits of Brass Pipe Fittings
Eight benefits give brass its edge over plastic and steel in threaded service.
- Corrosion resistance holds well in treated water and general atmospheric exposure. Salt spray, soft or chlorinated water, and aggressive soils call for DZR or naval grades to prevent dezincification.
- Strength sits far above plastic fittings, with tensile figures running from 338 to 469 MPa in the free-cutting grade.
- Threaded joints stay leak-resistant through vibration and thermal movement.
- Installation needs no hot works, and spanners with thread sealant complete the job.
- Heat travels through brass at 115 W/m·K, so radiator and heat exchanger connections benefit.
- Machinability rated at 100% keeps custom parts affordable.
- Maintenance stays limited to occasional visual checks.
- Plated finishes in nickel or chrome apply cleanly where appearance counts.
Brass Pipe Fittings Sizes
Brass fittings are supplied from 1/8″ to 4″ NPS, equal to DN 6 through DN 100. Buyers order by nominal bore or outside diameter. Threaded items are called out by thread size and form rather than wall thickness, and pressure rating follows the fitting class. Sizes outside this band are quoted against the drawing.
Manufacturing Process of Brass Pipe Fittings
Common Applications
Products
Exporter, Manufacturer & Supplier of Brass Pipe Fittings in various material and sizes.
FAQs
What Are the Common Grades Used for Brass Pipe Fittings?
Metracore supplies C36000, C37700, C46400, and C46500. C36000 is the fastest for machining, C37700 is suitable for hot forging, and both types of naval brass are designed to withstand saline exposure.
Where Are Brass Pipe Fittings Used?
Plumbing, water supply, HVAC, gas piping, industrial process lines and irrigation systems all use brass fittings. Marine work requires a tin-bearing grade.
Which Types of Brass Pipe Fittings Are Available?
Elbows, tees, reducers, caps, couplings, unions and adapters come in threaded and compression patterns, plus forged fittings for higher mechanical integrity.
What Standards Apply to Brass Pipe Fittings?
ASME B16.15 and ASME B16.18 cover the fittings. ASTM B16, B124, and B283 govern the rod, forging stock and die forgings.
How Do I Select the Right Brass Pipe Fittings?
First, match the grade to the fluid, then fix the size, thread form, and connection type. Working pressure, temperature, and the project standard settle the rest.
Can Brass Pipe Fittings Be Used With Seawater?
Standard C36000 dezincifies in seawater and belongs nowhere near it. Specify C46400 or C46500, where tin and arsenic restrict zinc loss.