The largest users of the valve are the petrochemical industry, the power sector, the metallurgy sector, the chemical industry and the urban construction sector. The petrochemical industry mainly adopts API standard gate valves, globe valves and check valves; the power sector mainly adopts high-temperature pressure gate valves, globe valves, check valves and safety valves for power stations, and low pressure butterfly valves and gate valves for part of the water supply and drainage valves; the chemical industry mainly adopts them. Stainless steel gate valve, globe valve and check valve; metallurgical industry mainly adopts low-pressure large-diameter butterfly valve, oxygen globe valve and oxygen ball valve; urban construction department mainly adopts low-pressure valve, such as large-diameter gate valve mainly used in urban tap water pipeline; The middle line butterfly valve, metal seal butterfly valve mainly used in urban heating, etc.; oil pipeline mainly uses flat gate valve and ball valve; the pharmaceutical industry mainly uses stainless steel ball valve; the food industry mainly uses stainless steel ball valve. Due to changes in user needs, the market trend of valve products will also undergo corresponding changes. The main development trends in the future will be as follows:
1. With the shift from oil development to oil fields in the interior and offshore oil fields, and the development of thermal power and hydropower and nuclear power from 300,000 kilowatts to less than 300,000 kilowatts in the power industry, valve products should also change their performance in response to changes in equipment applications. parameter;
2. The urban construction system generally uses a large number of low-pressure valves, and develops to environment-friendly and energy-saving types, that is, the low-pressure iron gate valves used in the past have gradually turned to environment-friendly rubber sheet valves, balancing valves, metal sealing butterfly valves, and midline sealing butterfly valves, to transfer oil, The development of gas transmission projects in the direction of pipelines requires a large number of flat gate valves and ball valves.
3. The other side of energy development is energy conservation. Therefore, from the perspective of energy conservation, steam traps must be developed and developed to subcritical and supercritical high parameters.
4. The development of the power station is proceeding to large-scale development. Therefore, large-diameter and high-pressure safety valves and pressure reducing valves are required. At the same time, valves must be opened and closed quickly.
5. For the needs of the complete set of projects, the valve supply has evolved from a single variety to multiple varieties and multiple specifications. The need for a valve for an engineering project is increasingly provided by a valve manufacturer.
Pit Balls
Pit balls are one of the toys of children's playgrounds. They can also be used in places such as Inflatable Swimming Pools, inflatable castles, water parks and field activities, which can bring wisdom and fun to children.
Pit ball uses two per porvis blowing techniques. Ball has pores, but the pores are all in the mold, and the pores are very small. Due to the production of plastic at high temperatures, when the plastic began to melt at high temperature, when it flowed to the mold ball cup, it instantly fixed the mold, instantly blown air, opened the mold, and naturally formed a spherical shape.
If you observe carefully on the sphere, there are traces of tiny bleaching holes, but this does not affect the safety of the product.
The Inflatable Toys played by children pay more attention to safety issues. The sphere is tight and not leaked, and it will not explode in the play.
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P&D Plastic Manufacture Co., Ltd , https://www.jmInflatableboat.com