It began in the early 1920s. Before the 1949, the particleboard only had cement wood board. In 1952, it began to produce protein glue particle board. In 1956, the resin glue particle board began to produce fiberboard in 1958. In the early 1960s, the wet fiber board factory was established in Beijing and Shanghai. It was built in the early 70s. Dry and flexible fiberboard production lines began producing medium density fiberboard in 1980. Now all the production capacity of wood-based panels has exceeded 80 million cubic meters.
There have three type screw pumps: 1. Single Screw Pump. 2. Three Screw Pump. 3. twin screw pump 1. single screw pump usually been used to transfer sludge, mud, sauce etc thick liquid. 2. three screw pump usually beed usde to transfer the temperature not higher than 150 degree diesel fuel oil, lubricating oil etc oil. and heat insulation triple screw pump beed used to transfer bitumen, heavy oil etc, pump can bear 300 degree high temperature.
Screw Pump,Screw Type Pump,Screw Vacuum Pump,Rotary Screw Pump
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