High-pressure flanges are pipe fittings used at bends in high-pressure pipelines. Generally, the wall thickness of high-pressure flanges is thicker than that of standard elbows, or the materials have higher pressure-bearing strength than standard elbows. High-pressure flanges are commonly used in oil transmission pipelines, liquefied gas pipelines, water supply pipelines, and more.

High-pressure flanges are used to connect two pipes with the same nominal diameter, allowing the pipeline to make a 90-degree bend. They are categorized into several types:

The manufacturing standards can be categorized into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, and so on.

Carbon steel, cast steel, alloy steel, copper, aluminum alloy, stainless steel, plastic, argon glass, PPC, and more, categorized by material.

Divided by the production method, it can be categorized into extrusion, pressing, forging, casting, etc.