Why are ASTM A105 nipple fittings used in piping?
These components have widespread uses in industries like chemical processing and petrochemicals, securely connecting piping and fittings. ASTM A105 nipple fittings comprise a short pipe with male threads at both ends. They may have one unthreaded end. Nipples usually operate in low-pressure networks, although the rating changes with the piping design and the temperature.
Nipples get manufactured by cutting the required length of the piping and joining the end connections. Clients can order these fittings in various types, although threaded and welded are standard.
How do you measure for an ASTM A105 hex nipple?
An ASTM A105 hex nipple has male threading on both ends and a hexagonal bolt in the centre. They connect pipes with female endings in plumbing, automotive, and other general engineering applications.
Customers can measure these components by the inside diameter of the pipe and its nominal diameter equivalent. The specified length of the nipple should include the threads.
Hex nipples are very popular because of their straightforward tightening/dismantling without creating undue torque. It offers a superior mechanical advantage over circular nipple fittings.
What is the function of an ASTM A105N CS threaded pipe nipple?
These nipples are helpful in threaded piping systems. An ASTM A105N CS threaded pipe nipple has threaded ends on both sides and can connect female-threaded connections.
These fittings must get handled with care during tightening and loosening. Any damage to the threading warrants replacement, as it will compromise the connection. An SA105 BSP nipple is more vulnerable to leakage. It requires specialized tools for maintenance to ensure a longer service duration. You may also use an ASTM A105 NPT nipple if your application demands it.
ASTM A105 Nipple Fittings specification
| Material | Sizes | Connection Types |
|---|---|---|
| ASTM A105 |
|
|
| End Type | Forging Methods | Surface |
| TOE / TBE / Male / Female |
|
|
| Threads | ASME/ANSI | Test Certificates |
| NPT, BSPT, BSPP |
|
|
Types of ASTM A105 nipple fittings
Carbon steel ASTM a105 threaded pipe nipple
Carbon steel ASTM a105 screwed pipe nipple
ASTM A105 pipe nipple
ASTM A105 threaded pipe nipples
ASME SA105 carbon steel socket weld nipple
SA105 carbon steel forged nipple
ASTM A105 NPT nipple dimensions
| Size | Threaded Tube DIN2440 | Threaded Tube BS 1387 | Length | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| O.D. | Wall thickness | O.D. B, mm | Wall thickness S, mm | Parallel nipples | Barrel/Taper nipples | |||||
| DN | inch | B, mm | S, mm | Light | Medium / Heavy | Light | Medium | Heavy | L,mm | L, mm |
| 6 | 1/8 | 10.02 | 2 | 10.02 | 10.02 | 1.06 | 2 | 16 | 30mm – 2500mm | |
| 8 | 1/4 | 13.05 | 2.035 | 13.06 | 13.09 | 1.08 | 2.03 | 2.09 | 18 | 30mm – 2500mm |
| 10 | 3/8 | 17.02 | 2.035 | 17.01 | 17.04 | 1.08 | 2.03 | 2.09 | 22 | 30mm – 2500mm |
| 15 | 1/2 | 21.03 | 2.065 | 21.04 | 21.07 | 2 | 2.06 | 3.02 | 25 | 30mm – 2500mm |
| 20 | 3/4 | 26.09 | 2.065 | 26.09 | 27.02 | 2.03 | 2.06 | 3.02 | 30 | 30mm – 2500mm |
| 25 | 1 | 33.07 | 3.025 | 33.08 | 34.02 | 2.06 | 3.02 | 4 | 35 | 30mm – 2500mm |
| 32 | 1 1/4 | 42.04 | 3.025 | 42.05 | 42.09 | 2.06 | 3.02 | 4 | 38 | 30mm – 2500mm |
| 40 | 1 1/2 | 48.03 | 3.025 | 48.04 | 48.08 | 2.09 | 3.02 | 4 | 38 | 30mm – 2500mm |
| 50 | 2 | 60.03 | 3.065 | 60.02 | 60.08 | 2.09 | 3.06 | 4.05 | 45 | 30mm – 2500mm |
| 65 | 2 1/2 | 76.01 | 3.065 | 76 | 76.06 | 3.02 | 3.06 | 4.05 | 55 | 30mm – 2500mm |
| 80 | 3 | 88.09 | 4.005 | 88.07 | 89.05 | 3.02 | 4 | 5 | 60 | 30mm – 2500mm |
| 100 | 4 | 114.03 | 4.05 | 113.09 | 114.09 | 3.06 | 4.05 | 5.04 | 70 | 30mm – 2500mm |
| 125 | 5 | 139.07 | 4.085 | 139.07 | 5 | 5.04 | 85 | 30mm – 2500mm | ||
| 150 | 6 | 165.01 | 4.085 | 165.01 | 5 | 5.04 | 100 | 30mm – 2500mm | ||
SA105 hex nipple chemical composition
| C | Si | Mn | Cu | S | V | P | Cr | Mo | Ni |
| 0.35 | 0.10–0.35 | 0.60–1.05 | 0.40 | 0.040 | 0.08 | 0.035 | 0.30 | 0.12 | 0.40 |
ASTM A105N CS threaded pipe nipple mechanical properties
| Elongation | Tensile Properties | HB max |
|---|---|---|
| 22 % | 485(N/mm2) | 187 |
How do ASTM A105 Carbon Steel welding nipples work?
As the name implies, these fittings connect to welded piping systems. An ASTM A105 carbon steel welding nipple has a threaded connection at one end. The other end is unthreaded (a regular cut). Once you connect the unthreaded end, installing the piping or other components is easier to manage.
These fittings can create a stronger connection due to the higher surface area. Numerous industries use these fittings for leak-proof performance in pressure systems. For instance, you can find them in the oil and gas industries and paper production. They may also operate in the semiconductors sector.
What is the difference between an ASTM A105 hose nipple and an A105N close nipple?
Usually, nipples maintain a small measure of unthreaded piping between the two threaded ends. But an A105N close nipple has no unthreaded pipe between the two ends; the fittings are so proximal that the nipple gets almost hidden.
Close nipples build a tight connection between female threaded pipes or other components. But they need a wrench for assembly, requiring you to hold the threaded region carefully.
In contrast, an ASTM A105 hose nipple has one end with a male-threaded connection. But the other has a hose barb the same size as the piping. Note that the barb may also be smaller.
A105 Carbon Steel barrel nipple vs ASME SA105 swage nipple
An A105 carbon steel barrel nipple has a tapered NPT thread at both ends. The central area stays unthreaded. It may also be called TBE (threaded both ends).
Swage nipples serve a unique purpose: efficiently transferring fluids between pipes of different sizes. An ASME SA105 swage nipple can be concentric or eccentric, based on whether the pipeline is vertical or horizontal. Manufacturers produce these fittings with plain or threaded ends. You can ask for bevelled ends if your application demands it.