The manufacturing process of the high-pressure elbow first welds a polygonal ring shell with a polygonal cross-section or a polygonal fan-shaped shell with closed ends.
Threaded flange refers to a type of flange that is connected to the pipeline by threads. During design, it can be treated as loose flange.
Cast iron manhole covers are divided into nodular cast iron manhole covers and gray cast iron manhole covers.
The opening and closing part of the gate valve is a gate. The movement direction of the gate is perpendicular to the direction of the fluid.
Check valve refers to a kind of valve whose opening and closing parts are circular flaps and rely on its own weight and medium pressure to block the backflow of medium.
Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve which can be used for on-off control of low-pressure pipeline medium means that the clos
A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It is a device that enables the medium (liquid, gas, powder) in piping and equipment to flow or stop
Ductile iron pipe is a kind of cast iron pipe. The quality requires the spheroidization level of cast iron pipes to be 1-3 (spheroidization rate> 80%), so the mechanical properties of the material its
In the pipeline system, the elbow is a pipe fitting that changes the direction of the pipeline. According to the angle, there are three kinds of the most commonly used, 45 ° and 90 ° 180 °.
No friction when opening and closing. This function completely solves the problem that the traditional [wiki] valve [/ wiki] affects the seal due to the friction between the sealing surfaces.
