Beijing Metro is a service of Beijing urban rail transit system in China. lts planningbegan in 1953, engineering was established in 1965, the first line was completedin 1969. lt began operation in 1971 and it is the first subway system in China.
2023-09-22
Shanghai metro, the first line of Shanghai rail transit system opened on April 10.1995, is the third city rail transit system in mainland of China after Beijing andTianjin.
2023-09-22
On April 18,2007 , the China railway sixth speed-up was started.New EMU hasthe characteristics of advanced technology,reliable safety,comfort andenvironmental protection, etc.
2023-09-22
Impeller adopts carbon steel or aluminum alloy production, according to the principle of aerodyamics blade design, has the advantages of large volume, high pressure, high efficiency, low noise, smooth operation, small volume, light weight, long service life, etc. Fan installation disk using CIS structure forming and spinning processing, has the characteristics of high strength, beautiful appearance, convenient installation, etc. Fan surface after advanced coating process, enhance the anti rust, corrosion protection; blower is driven by three-phase asynchronous motor, the motor insulation class is F, protection grade is IP55, the international brand fress repair has the advantages of bearing, high voltage and frequency transmission, fan can be used at low temperature, high temperature and the high alititude environment.
2021-03-12
The impeller is made of high quality cold-rolled steel plate, aluminum alloy plate, 304 stainless steel plate, aluminum alloy die casting process. Blade according to the principle of aerodynamics design, with the wind, high efficiency, low noise, stable operation, small size, light weight, long life and so on. The installation of the fan is made of the structure of the body and the spinning technology, which has the advantages of high strength, beautiful appearance, convenient installation, etc. Fan surface through advanced technology and surface treatment (spray treatment, pickling passivation spinning fingerpringt, electrophoresis) amd enhances the anti rust and corrosion protection. Fan driven by three-phase asynchronous motor, motor insulation class is F, protection grade is IP56, the ues of international brand maintenance free bearings, high voltage and frequency transmission and other advantages. Long term use of low temperature, high temperature and high alititude.
2021-03-12
DF series centrifugal fan is mainly direct drive, single volute outlet and double volute outlet structure has the advantages of unique structure, body, beautiful, convenient installation. According to the principle of the air dynamics, the fan casing and impeller are designed with quality cord rolled steel, galvanized sheet, aluminum alloy plate, 304 stainless steel plate, which has the advantages of large air quantity, high pressure, low noise, stable operation, small volume, light weight and long service life. Fan surface through advanced technology and surface treatment, pickling and pasivation anti fingerprint, electrophoressis and enhances the anti-rust and corrosion protection. Fan driven by three-phase asynchronous motor, motor insulation class is F, protectiom grade IP56, the use of international brand maintenance free bearings, resistance to voltage and frequency transmission, etc. Long tern use of low temperature, high temperature and high altitude. DF series fan covers train air conditioning refrigeration capacity of 5.0kW to 53kW air conditioning units, widely used in EMU, high-speed rail, subway, light rail, trolley buses and electric buses, etc
2021-03-12
DF series centrifugal fan is mainly direct drive, single volute outlet and double volute outlet structure has the advantages of unique structure, body, beautiful, convenient installation. On the basis of the principle of the volute and impeller aerodynamic design of the wind turbine, the carbon steel or aluminum alloy sheet of high quality refined processing, has the advantages of large volume, high pressure, low noise, smooth operation, small volume, light weight, long service life, etc. Fan surface after advanced coating process, enhance the anti rust, corrosion protection; blower is driven by three-phase induction motor, insulation class is F, protectiom grade IP55, the advantages of the international borand free repair bearing resistance, voltage and frequency transmission, fan can be used at low temperature, high tmperature and high altitude environment.
2021-03-12