The widespread use of pipe fittings abroad

Steel pipe (or black iron pipe) was once the more popular choice for conveying water and combustible gases. Steel pipe is still widely used in many homes and businesses to transport natural gas or propane fuel, and it serves as a highly favored heat‑resistant material in automatic sprinkler systems. In commercial buildings, fittings are employed to convey heating or cooling water, as well as in heat exchangers, air‑conditioning systems, variable‑air‑volume (VAV) air‑handling units, and other HVAC equipment. Steel pipes are joined by threaded connections; sometimes tapered threads are cut at the pipe ends (see National Pipe Thread), and sealing agents—such as thread‑sealing compounds or thread‑sealing tape (also known as PTFE tape)—are applied.

Steel pipes are joined by threaded connections; sometimes tapered threads are used (see national pipe threads), with the pipe ends cut to form the thread profile. Sealing is achieved using thread‑seal compounds or thread‑seal tape—also known as PTFE tape—after which the fitting is tightened with a pipe wrench to ensure proper engagement. Beyond domestic or commercial applications, pipe fittings are often joined by welding, or by mechanical couplings such as disc‑type connectors or specialized fittings that press the pipe ends into grooves; this latter method is rarely employed today.

Other changes include various stainless steel pipes and chromium alloys. Under high-pressure conditions, these are typically welded using tungsten inert gas (TIG) welding.

In Canada, black iron pipe is commonly used for connecting gas‑fired appliances that run on natural gas or propane (LPG). However, it must be clearly marked—either by painting it yellow or by affixing yellow bands at regular intervals—and certain restrictions apply to its nominal pipe size when installed through walls and buildings. For propane in particular, supply must be provided from an external tank (or cylinder), as it is subject to weather conditions, and cathodic corrosion protection is required when the piping is buried underground.

The pipe fittings industry has promising prospects for future development.

Working capacity of the elbow joint

The pipe fittings industry has promising prospects for future development.

Working capacity of the elbow joint

Related News