A knife gate valve has two sealing surfaces and adopts the gate as its disc. The gate moves in perpendicular to the direction of fluids. With the help of the knife-shaped gate able to cut off the...
Needle valves have the capability of fine adjustments. Along the flow direction of media, these valves are operated to change the flow areas for blocking or regulating the flow. Nominal Pressure:...
All the valves are operated for cutting off fluids. According to various valve cores, valves can be divided into globe valves, gate valves, plug valves, ball valves, butterfly valves, needle...
Forged steel ball valves are mainly used for gas pipelines in urban areas, long-term petroleum pipelines and natural gas pipelines. The security, the weather resistance and the long-term working...
According to the position of the screw of the valve stem, the gate valve is divided into the outside screw stem rising through handwheel type gate valve and the inside screw non-rising stem type...
The outside screw stem rising through hand wheel type gate valve An outside screw stem rising through hand wheel type gate valve adopts the structure that the nut of the valve stem is on the valve...
Plug-valve: Plug valves adopt cock bodies with through holes as their valve discs. The valve is opened and closed by the cock body rotating along with the valve stem. The small packless plug valve...
In the 230 B.C, the first description of three-way plug valves is noted in the Byzantine era. At that time, a three-way valve was is made of bamboos and had a wooden cork between two bamboo strips....
A seamless steel pipe, a kind of long steel, has hollow section without seam. It is made from perforated tubular billets which are made of ingot steel or solid steel pipe and undergoes the process...
Many people simply think that stainless steel will not rust, rust doesn't occur in stainless steel. Ordinary carbon steel reacts with oxygen in atmosphere, and forms oxide film on the metal...
Wafer check valve is a universal one-way flow valve with light weight. It is easy to be installed between flanges. There are two semicircle spring fixed in the valve by pin. Spring deformation...
There are many different kinds of valve body materials suitable for a variety of different working conditions. Commonly used body material has the following nine categories: 1. Gray cast iron. It...
For the metal hard sealing ball valve, wear resistance and sealing performance still need improvement. Hardening treatment of ball and valve seat surface: The special ball valve is mainly used in...
It is the first obstacle to break for the future development of the valve industry in China to improve the level and grade of the valve products. The downturn of the entire valve industry leads to...
Chinese steel pipe industry has made great progress in recent years, however, it still facing five major challenges. 1. Overcapacity led by repeat investment and construction. In recent two years,...
Pipe cap, one of the indispensable pipe products, plays an important role in the pipeline, and it concludes high-pressure pipe cap, threaded cap, stainless steel cap and so on. Pipe cap is the...
The world has entered into a rapid development period of economic globalization and the inevitable trend of economic globalization is international standard. Through the study of association of ISO...
According to the needs of manufacturing process and pipeline installation, as well as the overall performance of various types of strainers, selection principles and note points of strainers can be...
Elbow, flange, tee, cross, reducer, etc. all belong to pipe fittings, which widely used in building industry. Elbow is used at pipe turnings; flange is used to connect pipe at the end of pipe. Tee...
Carbon steel pipe fittings is an environmentally friendly material. Compared with welding operations and threading operations, carbon steel pipe fittings-site installation is very convenient. Low...