A Steel Threaded Coupling is a short steel fitting used to connect two male threaded pipe ends in a straight line. It is often used in water lines, fire pipe work, compressed air lines, and general mechanical piping where a simple threaded joint is easier than welding. The part is small, but it must keep the thread clean and the wall thickness even, because a loose thread can lead to slow leakage during daily use.
This Steel Threaded Coupling can be made as full coupling or half coupling. Carbon steel is common for normal piping, and stainless steel can be selected when the line needs better surface cleanliness or better rust control. This product is usually checked by size, thread type, wall thickness, and surface finish before packing, so the installer can match it with pipe nipples, valves, elbows, and other threaded parts without extra cutting on site.
Product Parameters
|
Parameter |
Value |
|
Material |
Carbon steel, stainless steel optional |
|
Size Range |
1/8 inch to 6 inch |
|
Connection |
Female threaded connection |
|
Thread Type |
NPT, BSP, or custom thread by order |
|
Coupling Type |
Full coupling / half coupling |
|
Standard Reference |
ASME B16.11, ASTM A105, ASTM A182 where applicable |
|
Surface |
Black, plain, zinc plated, or hot-dip galvanized |
|
Use Range |
Water pipe, air pipe, fire pipe, mechanical pipe connection |
Components
1. Threaded body with straight inner bore.
2. Chamfered opening to help the pipe start into the thread.
3. Optional galvanized layer for better surface protection during storage.
Main Applications
Steel Threaded Coupling is used for threaded pipe repair points where welding is not planned.
Pump rooms, small pipeline branches, and equipment connection lines.
Maintenance stock for hardware shops and project spare parts.
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