At Paul Tube Fittings, we take pride in being a leading manufacturer and supplier of Brass Tube Fittings right here in Houston, USA. Our fittings are crafted with precision and are known for their outstanding corrosion resistance, durability, and easy installation. Whether it’s for plumbing, HVAC, instrumentation, or fluid handling systems, our brass tube fittings ensure reliable, leak-proof connections. Perfect for both residential and industrial uses, they deliver versatility and long-lasting performance. We’re committed to quality control, timely delivery, and keeping our customers happy, serving a wide range of industries with products that meet international standards.
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Table of Contents
Brass tube fittings are made up of a blend of copper and zinc alloys, usually featuring about 60-70% copper and 30-40% zinc. This combination gives them excellent machinability, corrosion resistance, and strength. They boast good tensile strength, moderate hardness, and resistance to wear and deformation. Plus, their low friction properties and thermal conductivity make them perfect for fluid and gas applications. With their resistance to rust and dezincification, these fittings are built to last in water systems and mildly corrosive environments, merging mechanical strength with easy manufacturing for reliable performance under various temperature and pressure conditions.
Brass Tube Fitting Specifications
- Standard : DIN, ASTM, BS and all International Standards.
- Size : 1/16″OD to 2″OD, 2mm OD to 50mm OD.
- For Metric Tube: 1.6 mm to 50 mm
- For Imperial Tube: 1/16″ to 2″
- Pressure Range : 100 Bar to 650 Bar (1500 Psi to 10000 Psi).
- Threads : UNF, BSPT, NPT, BSP, SAE, ISO etc.
- Connection Type : Female, Male.
- Shape : Hex Head, round head and square.
- Applicable Temperature : 150-400°C.
- Finish : Brass, natural, Electro-Tinned, Chrome Nickel, copper etc..
Brass Tube Fitting Chemical Composition
|
UNS No.
|
AS No.
|
Common Name
|
BSI No.
|
ISO No.
|
JIS No.
|
Copper %
|
Zinc %
|
Lead %
|
Other
|
|
C21000
|
210
|
95/5 Gilding metal
|
–
|
CuZn5
|
C2100
|
94-96
|
~5
|
|
–
|
|
C22000
|
220
|
90/10 Gilding metal
|
CZ101
|
CuZn10
|
C2200
|
89-91
|
~10
|
|
–
|
|
C23000
|
230
|
85/15 Gilding metal
|
Cz103
|
CuZn20
|
C2300
|
84-86
|
~15
|
|
–
|
|
C24000
|
240
|
80/20 Gilding metal
|
Cz103
|
CuZn20
|
C2400
|
78.5-81.5
|
~20
|
|
–
|
|
C26130
|
259
|
70/30 Arsenical brass
|
Cz126
|
CuZn30As
|
C4430
|
69-71
|
~30
|
|
Arsenic
0.02-0.06 |
|
C26000
|
260
|
70/30 Brass
|
Cz106
|
CuZn30
|
C2600
|
68.5-71.5
|
~30
|
|
–
|
|
C26800
|
268
|
Yellow brass (65/35)
|
Cz107
|
CuZn33
|
C2680
|
64-68.5
|
~33
|
|
–
|
|
C27000
|
270
|
65/35 Wire brass
|
Cz107
|
CuZn35
|
–
|
63-68.5
|
~35
|
|
–
|
|
C27200
|
272
|
63/37 Common brass
|
Cz108
|
CuZn37
|
C2720
|
62-65
|
~37
|
|
–
|
|
C35600
|
356
|
Engraving brass,
2% lead |
–
|
CuZn39Pb2
|
C3560
|
59-64.5
|
~39
|
2.0-3.0
|
–
|
|
C37000
|
370
|
Engraving brass,
1% lead |
–
|
CuZn39Pb1
|
C3710
|
59-62
|
~39
|
0.9-1.4
|
–
|
|
C38000
|
380
|
Section brass
|
Cz121
|
CuZn43Pb3
|
–
|
55-60
|
~43
|
1.5-3.0
|
Aluminum 0.1-0.6
|
|
C38500
|
385
|
Free cutting brass
|
Cz121
|
CuZn39Pb3
|
–
|
56-60
|
~39
|
2.5-4.5
|
–
|
Dimensions of Brass Tube Fittings
|
OD
|
OD Actual
|
Thread Designation – Nominal Size
|
Thread per inch
|
|
|
(fraction inch)
|
(inches)
|
(inches)
|
NPT
|
BSP
|
|
5/16
|
0.3125
|
1/16
|
27
|
28
|
|
13/32
|
0.405
|
1/8
|
27
|
28
|
|
35/64
|
0.540
|
1/4
|
18
|
19
|
|
43/64
|
0.675
|
3/8
|
18
|
19
|
|
27/32
|
0.840
|
1/2
|
14
|
14
|
|
1-3/64
|
1.050
|
3/4
|
14
|
14
|
|
1-5/16
|
1.315
|
1
|
11-1/2
|
11
|
|
1-21/32
|
1.660
|
1-1/4
|
11-1/2
|
11
|
|
1-29/32
|
1.900
|
1-1/2
|
11-1/2
|
11
|
|
2-3/8
|
2.375
|
2
|
8
|
11
|
|
2-7/8
|
2.875
|
2-1/2
|
8
|
11
|
|
3-1/2
|
3.5
|
3
|
8
|
11
|
|
4
|
4.0
|
3-1/2
|
8
|
11
|
|
4-1/2
|
4.5
|
4
|
8
|
11
|
|
5-5/8
|
5.563
|
5
|
8
|
11
|
|
6-5/8
|
6.625
|
6
|
8
|
11
|
Types of Brass Tube Fitting
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We offer These Products as per DIN, ISO, JIS or ANSI Standard.
Largest Manufacturer and Supplier of Brass Tube Fitting in Houston, USA
Brass Tube Fitting Uses
Brass tube fittings are a go-to choice in plumbing, HVAC systems, refrigeration, instrumentation, and the automotive industry, thanks to their corrosion resistance and durability. They excel at connecting water, gas, air, and oil lines, offering leak-proof and low-maintenance solutions. Their excellent machinability allows for custom fittings and precise installations, making them incredibly versatile. Whether you’re working on a residential project or a large industrial application, brass tube fittings are designed to meet your needs with reliability and efficiency.
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