Steel Pipe Cap
Steel pipe caps are fittings designed to cover the end of a pipe to protect the threads or to block the flow of fluid when the pipeline is not in use. They come in various shapes and materials, and can be used in different applications ranging from residential plumbing to industrial processes.
Points about steel pipe caps:
Types: There are mainly two types of steel pipe caps - Butt Weld (BW) Cap and Socket Weld (SW) Cap.
Materials: They can be made from carbon steel, stainless steel, alloy steel, and other materials to suit different environmental conditions and fluids.
Shapes: Steel pipe caps come in several shapes including hemispherical, elliptical, dish, and spherical. The shape chosen often depends on the pressure rating and strength required.
Standards: They are manufactured according to standards such as ASME B16.9 for butt weld cap and ASME B16.11 for socket weld cap, which define dimensions, ratings, testing, tolerances, and marking requirements.
Sizes: The size range for steel pipe caps can vary from 1/2” to 48” (DN15-DN1200), accommodating various pipe diameters.
Thickness: They are available in different schedules like SCH 10, SCH 40, and SCH 80, which indicate the wall thickness and therefore the pressure rating.
Surface Coatings: Options for surface coatings include black painted, varnished, epoxy coated, and galvanized to prevent corrosion and extend the cap’s lifespan.
Steel pipe caps are essential components in piping systems, ensuring safety and integrity by preventing contamination and maintaining pressure when pipes are not in use.
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