Qingdao Fluido Industrial Co. Ltd.

The elbow radius mean curvature radius. If the radius is the same as pipe diameter, it called short radius elbow, also called SR elbow, normally for low pressure and low speed pipelines.

In Europe, British Whitworth pipe threads (BSP and BSPT) are the most common. While in the USA the American NPT and NPTF are more common.

DN-nominal diameter. De- outer diameter. D- inner diameter. d-concrete pipe diameter. Φ- diameter of normal circle.

Flange Spigots are frequently used in water supply, sewage, irrigation, and industrial piping systems.

As the core sealing component of flange connection, flange gaskets prevents medium leakage and resisting high temperature and high pressure environment.

DN refers to the nominal diameter, a dimensionless number indicating the size of the flange, while PN indicates the pressure rating, representing the maximum allowable pressure at a specific temperature.

butterfly valves, check valves, globe valves and gate valves have different emphases on the precautions for installation, operation and maintenance due to differences.