The blind plate is similar in form, except that the blind plate is removable plug, while the welded pipe cap is not removable. The pipe cap includes convex pipe cap, cone shell, reducer section, flat cover and the design of tightening mouth.

Convex pipe cap includes: hemispherical pipe cap, oval pipe cap, disc pipe cap and dome pipe cap. From the point of view of force, convex pipe cap is gradually bad from the hemispherical pipe cap, but from the point of view of manufacturing difficulty, gradually good manufacturing.

Metal plug: also known as the quartet plug, stainless steel corners head, stainless steel square head, stainless steel tube cap, stainless steel pipe cap in the four corners, plug, plug, oil plug, plug, plug features: a secure connection, high crushing capacity, good sealing and repeatability, easy installation and maintenance, safe and reliable work, etc Working principle: It is to cut the steel pipe into the pipe and seal it with a screw lock. It does not need welding when it is connected with steel pipe, which is beneficial to fire prevention, explosion prevention and aerial work, and can eliminate the defects caused by careless welding. Widely used: oil refining, chemical industry, petroleum, natural gas, food, manufacturing, instrumentation and other nominal pressure: 2.5mpa, 16Mpa applicable temperature: ≤ Applicable medium: oil, water, gas and other non-corrosive or corrosive media.

There are many kinds of plugs, and the range of use is also very wide. As long as there are pipes, plugs will be used. According to the different plug material can be roughly divided into plastic plug, iron plug, stainless steel plug, copper plug, aluminum plug...... And so on, plug application in all aspects of life, such as water pipes, mechanical equipment, hydraulic industry plug with the most is engineering machinery equipment.