A Black Steel Pipe Nipple is a short steel connector with external threads at both ends and a plain section between them. It is used to join two female-threaded components, extend a branch, or set a precise distance between a valve and another fitting. The key technical feature is the coordinated use of recognized pipe, nipple, and thread requirements, giving drawings and order schedules a clear basis for manufacture and inspection. Length is measured end to end, so the specified dimension should reflect the installed connection rather than only the visible center section.
Components
Steel pipe body - forms the main pressure-containing connection section.
External NPT ends - mate with compatible female-threaded components.
Plain center section - provides wrench clearance and installed spacing.
Thread protection - temporary caps can protect finished ends during handling.
Product Parameters
|
Item |
Specification |
|
Material / Finish |
Black steel |
|
Pipe Standard |
ASTM A53 |
|
Nipple Standard |
ASTM A733 |
|
Thread |
NPT, ASME B1.20.1 |
|
Size Range |
1/8 in. to 6 in. |
|
Wall Options |
SCH40, SCH80/XS/XH, SCH160, XXH |
|
Length |
Standard and special-order lengths |
Product Advantages
Clear specification
Black Steel Pipe Nipple links the pipe, nipple, and NPT thread requirements in one item.
Compact connection
The fitting joins two female-threaded points without a separate adapter.
Broad dimensional choice
Multiple diameters, schedules, and lengths suit varied layouts.
Custom spacing
Special end-to-end lengths can be produced from stated dimensions.
Main Applications
General threaded steel piping for water, air, and compatible utility services. The Black Steel Pipe Nipple can be used in these layouts when the specified thread, schedule, and end-to-end length match the adjoining components.
Short connections between valves, unions, couplings, tees, and equipment ports.
Repair sections where a removable threaded connector simplifies future maintenance.
Fabricated assemblies that need a defined connection length from the project drawing.
FAQ
Q: What thread form is used?
A: NPT threads can be supplied in accordance with ASME B1.20.1. For a Black Steel Pipe Nipple, confirm nominal size, wall schedule, thread form, and required length before ordering.
Q: How is nipple length measured?
A: Length is measured from one end of the fitting to the other.
Q: Can a special length be supplied?
A: Yes. A special length can be made from a drawing, sample, or stated dimension.
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