Telescopic butterfly valve dimensions, flange size and bolt hole size

Telescopic butterfly valve as a system used to achieve the pipeline system on-off and flow control components, has been in the petroleum, chemical, metallurgical, hydropower and many other fields have been very widely used. Retractable butterfly valve disc installed in the pipe diameter direct

How to do the best car insurance

For the car owner who just bought a new car, the common sense about car maintenance is a must. Many friends have asked Xiao Bian what is the car's insurance, second insurance and three guarantees. Today, Beimai.com will give you some general knowledge about car ma

Scenic spot car maintenance matters needing attention

Sightseeing vehicles in the scenic area are important mobile tools for tourists to visit and travel. These vehicles carry thousands of tourists each year. The performance of these sightseeing vehicles will change with the i

Sliding line characteristics analysis

The cross-sectional area of ​​the guide rod is conceived as a special shape, increasing the axial moment of its horizontal and vertical position, so that the guide rod is in excellent bending resistance, thereby better guaranteeing the contact of the collector and the guide rod.

Municipal sanitation a good helper - Dongfeng Tianjin combined with dredging

The joint dredging car is also called a sewer dredging vehicle. This car is a new type of sanitation special vehicle that combines the functions of a high-pressure cleaning car and a suction truck. The highlight function of the car is a sewer blockage area that cannot be reached by manp