Barrel Nipple
What is a Barrel Nipple?
A Barrel Nipple is a straight pipe fitting machined from solid bar stock, featuring male threads on both ends and a uniform cylindrical body throughout its length. Unlike hex nipples, barrel nipples do not have a wrench-friendly hex section, making them ideal for compact or concealed piping layouts.
Commonly used in instrumentation lines, utility piping, and low-clearance connections, barrel nipples are preferred for their clean design, high-pressure tolerance, and precise machining.
Key Features
- Smooth Cylindrical Body – Suitable for space-restricted inline pipe connections.
- Threaded on Both Ends – Ensures leak-proof coupling with female-threaded components.
- Machined from Solid Bar – Provides strength and dimensional precision.
- Available in Various Lengths & Threads – BSP, NPT, and custom threads supported.
- Built to International Standards – ASME, MSS-SP, DIN, and BS compliant.
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ⅛" to 4" |
| Thread Types | NPT, BSP, BSPT, ISO Metric |
| Pressure Ratings | Class 3000 / 6000 |
| Material Options | SS 304 / 316, Carbon Steel, Duplex, Alloys |
| Standards | ASME B16.11, MSS-SP-95, BS 3799 |
| Manufacturing | Machined from Solid Bar |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 750 MPa |
| Yield Strength | 250 – 450 MPa |
| Elongation | 20% – 30% |
| Hardness | 125 – 250 HB |
| Temperature Range | -46°C to +650°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 16.0 – 20.0 |
| Nickel (Ni) | 8.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A276, A182 F304 / F316, A105 |
| ASME | B16.11 |
| MSS-SP | SP-95 |
| BS | 3799 |
| DIN | 2950, 2975 |
| Nipple Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Barrel Nipple | 1" | 12.50 |
| Barrel Nipple | 1½" | 15.80 |
| Barrel Nipple | 2" | 22.40 |
Applications of Barrel Nipple
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the main difference between a barrel nipple and a hex nipple?
A barrel nipple has a uniform round body with threads on both ends, while a hex nipple includes a hexagonal center for wrenching.
Are barrel nipples available in custom lengths?
Yes, we manufacture cut-to-length barrel nipples based on your application.
Which threads do you support?
We offer BSP, BSPT, NPT, ISO, and other thread types upon request.
Are stainless steel barrel nipples suitable for corrosive use?
Absolutely. SS 304 and SS 316 options are ideal for marine, chemical, and water processing systems.
