Diesel pump is widely used in shipbuilding, oil production and heavy machinery. In 2008, the ship output reached 15000 tons, and the deadweight tonnage accounted for 21 tons in the world market. By 2015, China will become the largest shipbuilding country in the world. In order to ensure the normal navigation or mooring of the ship and meet the needs of the crew and passengers, each ship must be equipped with a certain number of marine pumps that can operate accordingly. Diesel engine water pump is an important auxiliary tool. According to incomplete statistics, the total amount of diesel engine water pumps of various types and uses in various types of marine auxiliary mechanical equipment accounts for about 20-30 tons of the total amount of marine mechanical equipment. The price of marine water pump also accounts for a large proportion of the cost of ship equipment. Of the total cost, marine pumps account for about £ 4-8 of the cost of marine equipment. Generally, the purchase amount of marine pumps for medium-sized ships and above can reach more than 10 million yuan. When it comes to the key pump market, we must say that China has completed the "west to East Gas Transmission" project. The project of "west to East Gas Transmission" also needs pump products. At the same time, the state needs to build other gas transmission pipelines. In these projects, a large number of pump products are also needed.
Different pumps have different uses, different liquid media, different flow rates and different oil extraction ranges. Therefore, their structures are of course different, and their materials are also different. It can be roughly divided into: 1. Urban water supply 2. Sewage system 3. Civil engineering, building system 4. Agricultural water conservancy system 5. Power station system 6. Chemical industry system 7. Petroleum industry system 8. Mining metallurgy system 9. Light industry system 10. Ship system