Brass Pipe Fittings
Metracore Alloys manufactures brass pipe fittings on dedicated CNC turning lines that cut threads to gauge class in one production cycle. Two thread families are standard: the parallel BSP form checked against ISO 228 and the taper NPT form checked against ASME B1.20.1, so one order can serve pipework built to European or American practice. Sizes span 1/8 inch to 4 inches across ten fitting configurations, from elbows and tees through to compression types.
Free-cutting C36000 handles general plumbing duty in non-potable applications. For drinking water contact, low-lead grades such as C69300 or C87850 meet the 0.25% weighted average lead limit required in most markets. Hot-forged C37700 suits gas manifolds and heavier sections, while dezincification-resistant DZR brass, grade CW602N, protects against selective zinc loss in hot, soft, or chlorinated water. Custom machining is routine here: special thread combinations, extended nipple lengths, and hex profiles cut to customer drawings all ship against confirmed dates. Plumbing contractors, HVAC installers, water treatment plants, and OEM equipment builders make up most of our order book. Send us a size list or drawing, and we’ll return firm pricing.
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?
As manufacturer and supplier, Metracore Alloys keeps every production stage, incoming material through final inspection, inside its ISO-certified facility. Custom sizes aren’t a problem: we produce non-standard walls and trimmed elbows to customer drawings. Third-party inspection is available on request. Each order includes an EN 10204 type 3.1 certificate. Standard dimensions are kept in stock for fast dispatch, with global shipping direct to major ports.
- Brass Pipe Fittings Specification
- Types of Brass Pipe Fittings
- Technical Details of Brass Pipe Fittings
- 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
90° Elbow
Equal Tee
Eccentric Reducer
45° Elbow
Reducing Tee
Cross
Concentric Reducer
Bend
Socket Weld Fittings
Reach out to Metracore Alloys for reliable Brass Pipe Fittings
Technical Details of Brass Pipe Fittings
Chemical Composition
| Element | C36000 (Free-Cutting) | C37700 (Forging) | C46400 (Naval) |
| Copper (Cu) | 60.0 – 63.0 | 58.0 – 61.0 | 59.0 – 62.0 |
| Zinc (Zn) | Balance | Balance | Balance |
| Lead (Pb) | 2.5 – 3.7 | 1.5 – 2.5 | 0.20 max |
| Iron (Fe) | 0.35 max | 0.30 max | 0.10 max |
| Tin (Sn) | – | – | 0.5 – 1.0 |
| Nickel (Ni) | – | – | – |
Physical & Mechanical Properties
| Property | Value (C36000) |
| Tensile Strength | 338 – 469 MPa |
| Yield Strength | 124 – 310 MPa |
| Hardness | 78 HRB (half-hard rod) |
| Density | 8.49 g/cm³ |
| Melting Range | 885 – 900°C |
| Thermal Conductivity | 115 W/m·K |
| Machinability | 100% (reference grade for the rating scale) |
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.
Available Sizes & Standards
Manufacturing Process of Brass Pipe Fittings
Common Applications
Products
Exporter, Manufacturer & Supplier of Brass Pipe Fittings in various material and sizes.