Heat exchange tube 1. Overview
(1) Manufacturing method:
① Generally, the service temperature of boiler steel pipe is below 450 ℃, and the price of 9948 heat exchange pipe. The domestic pipes are mainly made of No. 10 and No. 20 carbon steel hot-rolled pipes or cold drawn pipes.
② The steel pipe of high pressure boiler is often in high temperature and high pressure condition. Under the action of high temperature flue gas and water vapor, the pipe will be oxidized and corroded. The steel pipe is required to have high endurance strength, high corrosion performance and good structural stability.
(2) use:
① General boiler pipes are mainly used to manufacture water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, pipes and arch brick pipes, etc.
② High pressure boiler steel pipe is mainly used to manufacture superheater pipe, reheater pipe, air pipe, main steam pipe, etc