A threaded coupling can be made as a full coupling or a half coupling. The two forms are similar in basic function, but they are used in different connection positions. A full coupling has female threads from both ends and is used to join two male threaded pipe sections. It is common in repair lines, plant pipework, and equipment connection points.
A half coupling has a shorter connection body and is often used where only one side needs a threaded connection. This form can save space and keep the joint area compact. When the pipe route is crowded, a shorter fitting can make assembly easier and reduce unnecessary fitting length.
An Industrial Threaded Coupling may use carbon steel ASTM A105 or stainless steel ASTM A182 grades, depending on the pipe material. A Heavy Duty Threaded Coupling follows the same reference supply range, including 1/8 inch to 6 inch sizes under ASME B16.11. NPT and BSP thread options are also listed, so the thread form should be confirmed before installation.
For steady assembly, the coupling type should match the pipe end, the thread standard, and the available space. Full coupling is useful for joining two pipe ends. Half coupling is better when the joint needs a shorter body or only one threaded side is needed.
