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Manufacturing methods:

① general boiler in the use of temperature below 450 ℃, the main domestic use on the 10th, on the 20th of hot-rolled carbon steel guitar or drawing of manufacturing.

② the use of high-pressure boilers are often in conditions of high temperature and high pressure, high temperature gas pipe and the role of water vapor, will happen oxidation and corrosion. Pipe has a high demand lasting strength, high corrosion of the anti-oxidation, and a good organizational stability.

Use:

① general of the main boiler used to make the water wall, the boiling water, superheated steam pipe, the locomotive of the superheated steam boiler tubes, large and small breathing tube and pipe, such as brick arch.

② high-pressure boiler tubes mainly used to manufacture high-pressure boilers and UHP superheater tubes, reheater of I. trachea, the main steam pipe, and so on.