Paul Tube Fittings is a reputable Houston, USA-based high-quality brass tube fittings manufacturer and supplier with a strong passion for excellence. The company provides precision-engineered fittings that guarantee reliable performance in a wide range of industrial applications. Paul Tube Fittings specializes in corrosion-resistant brass products with a durable finish and meets the demand for plumbing, HVAC, automobile, and marine industry customers. Our fittings are made to international standards with superior sealing performance and ease of installation. We take pride in timely delivery, best price, and unparalleled customer support, which makes us a favorite for brass tube fittings in the American market.
Brass tube fittings consist mainly of copper (around 60–70%) and zinc (30–40%), with periodic minute additions of lead, tin, or iron for improved machinability and strength. These fittings have outstanding corrosion resistance, fair tensile strength (about 300–500 MPa), and good ductility, enabling simple forming and sealing. They also provide outstanding thermal and electrical conduction. The mechanical properties of brass are suited for fittings for many assembly and disassembly operations, while its chemical makeup guarantees long life during service in challenging environments, especially in the presence of water, air, or mild chemicals.
| Material | Brass |
|---|---|
| Size | 1/16″OD to 2″OD, 2mm OD to 50mm OD |
| Shape | Hex Head, round head and square |
| Technique | 0.01 to 8mm |
| Surface Treatment | Available in BSPT Threaded, NPT threaded |
| Connection Type | Female, Male |
| Nominal Diameter Mm | 1/8″, 1/4″, 1/2″ 5/8″, 3/4″, 1″, 1.25″, 1.5″, 2″, 2.5″, |
| Type | Male Connector, Male Pipe Connector, Male Elbow, Male Adapter, Male Run Tee, Male Branch Tee, Female Connector, Tube Fittings, Female Adapter, Bulkhead Female Connector, Female Elbow, Female Run Tee, Female Branch Tee, Ferrule Union, Elbow Union, Pipe Fittings, Ferrule Union Tee, Reducing Union, Ferrule Reducer, Bulkhead Reducer, Tube Cap, Tube Plug, Flare Fittings, Compression Tube Fittings |
| Brass | Cu | Fe | Pb | Zn |
| Min./Max. | 60.0-63.0 | 0.35 | 2.5-3.0 | Rem. |
| Nominal | 61.5 | – | 2.7 | 35.4 |
| Properties | US Customary |
| Melting Point -Liquidus | 1650 F |
| Melting Point -Solidus | 1630 F |
| Density | 0.307 lb/in3at 68 F |
| Electrical Resistivity | 39.90 ohms – cmil/ft @ 68 F |
| Electrical Conductivity | 26 %IACS @ 68 F |
| Thermal Conductivity | 67 Btu · ft/(hr · ft2·oF)at 68F |
| Modulas of Elasticity in Tension | 14000 ksi |
| STANDARD | WERKSTOFF NR. | UNS |
| Brass | 934 | C36000 |
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Brass tube fittings are applied in most industries because of their strength, toughness, and resistance to corrosion. In plumbing and HVAC, they offer reliable, leak-tight connections for water, air, and gas tubing. The automotive industry uses them in fuel lines and braking systems, marine use trusts brass for saltwater corrosion resistance, while refrigeration, instrumentation, and pneumatic systems utilize them as well. Brass fittings are easy to machine and assemble, and they are the preferred choice for installation and maintenance work. They are also well-suited for architectural trim work, where appearance and tarnish resistance are important considerations.
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