Forged 45° and 90° NPT elbows for steel piping assemblies
We source A105 threaded elbows for small-bore pipework and equipment packages. Choose the change of direction, NPT size and fitting class together. A 90° elbow and a 45° elbow occupy different space, so the order keeps the bend angle and center-to-end dimension attached to the fitting description.
| Procurement route | Specification-based sourcing for your fitting schedule |
|---|---|
| Base material | ASTM A105 forged carbon steel |
| Fitting standard | ASME B16.11 |
| Thread specification | NPT to ASME B1.20.1 |
| Angles | 45° and 90° patterns |
| Equal elbow ends | Female NPT × female NPT of the same NPS |
| Special patterns | Reducing and street elbows identified separately |
| Order description | Angle, end sizes, material, class and quantity |
Dimension A runs from the pipe centerline intersection to the fitting end face. It helps check the elbow position before the pipe is cut and threaded.
| NPS | Class | Center-to-end A (in.) | Center-to-end A (mm) |
|---|---|---|---|
| 1/4 | 3000 | 31/32 | 24.61 |
| 3/8 | 3000 | 1 1/8 | 28.58 |
| 1/2 | 3000 | 1 5/16 | 33.34 |
| 3/4 | 3000 | 1 1/2 | 38.10 |
| 1 | 3000 | 1 3/4 | 44.45 |
| 1 1/4 | 3000 | 2 | 50.80 |
| 1 1/2 | 3000 | 2 3/8 | 60.33 |
| 2 | 3000 | 2 1/2 | 63.50 |
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Selected Class 3000 threaded 90° elbow reference dimensions from the Bonney Forge dimensional catalog. The threaded table and center-to-end A drawing are used; socket-weld, 45° and other class dimensions are separate. Millimeters are converted from the inch fractions.
A105 describes the material, not a complete order. The elbow angle, connection, class and required records remain separate parts of the fitting specification.
ASME B16.11 includes threaded Classes 2000, 3000 and 6000. Class 9000 belongs to socket-weld fittings in this standard. The threaded series stops at Class 6000.
The female ends use ASME B1.20.1 NPT threads. Specify the same thread system on mating pipe nipples and valves.
Two female threaded ends turn the run through a right angle. Check the outside body envelope as well as the center-to-end dimension where the fitting sits near a wall or frame.
A 45° fitting changes the route without a full right-angle turn. Its layout dimension must come from the 45° pattern, which has its own pipe-cutting dimensions.
A street pattern has one male and one female end. Name that pattern explicitly — the main specification otherwise supplies the two-female elbow.
A reducing pattern needs both end sizes and the angle. It changes direction and size in the same fitting, with a different body arrangement from an equal elbow.
Small-bore threaded branches need accurate angle and end descriptions around instruments and equipment. The fabrication drawing determines which connections can use threaded fittings.
A fitting schedule can combine 90° turns and 45° offsets. Keep the angle visible on each drawing mark to avoid an incorrect run length during prefabrication.
Match the old connection system, material and class before replacing a damaged elbow. Photographs show the angle; the thread standard and allowable service come from the original fitting identification.
Check the specified angle and whether the ends are female-female, street or reducing. Each pattern is checked on its own, even at a matching NPS.
Inspect both threaded openings for damage and contamination. The specified gauge checks the thread connection without relying on the apparent diameter of the opening.
Measure from the correct centerline datum to the end face. Comparing the overall outside width with a center-to-end table gives the wrong acceptance result.
Match the fitting identification and supplied documents to the piping schedule. Keep different material grades and classes separated during receiving.
We list 45° and 90° elbows on separate quotation lines. Size, angle, class and count stay together on the packing identification.
Threaded openings are protected from handling damage and debris. Small elbows are packed in identified groups, each group labeled with its size and pattern.
Send the elbow quantities with any couplings, tees, unions or nipples. The quote identifies the supplied patterns and required records before the order is accepted.
Backing off a made-up tapered-thread joint can disturb its seal. Assembly and final orientation should follow the piping procedure and the selected sealing system; do not plan the layout around loosening a completed joint.
No. It is a fitting geometry dimension. The pipe cut length also depends on the adjoining components, required centerline positions and thread engagement.
They create a different assembly envelope with an additional joint. The piping layout must allow the offset and the extra connection; they are not a direct dimensional replacement for one 90° fitting.
A standard threaded elbow needs space to turn during makeup. The piping layout may need a union or another specified separable connection to complete an assembly between fixed ends. Its location is part of the fabrication arrangement rather than a reason to loosen a completed tapered-thread joint.
The mating thread must be NPT and the pipe and fitting must satisfy the project piping class. Matching the nominal size alone does not establish material, wall selection or service suitability.
No. They use different material and fitting standards and can have different pressure-temperature limits and dimensions. A matching nominal thread size does not make the bodies or specified service interchangeable.
Other items in the same product category.
We wrote these for buyers specifying and receiving exactly this kind of package.
Send the 45° and 90° quantities, end sizes, A105 material requirement and fitting class. Include the drawing where a compact layout controls the fitting envelope.