How to Choose Pressure Piping Metal Material

(1) the metal material selection of pressure piping metal material selection principle (1) meet the requirements of operating conditions First of all should be based on conditions of use to judge whether the pipeline under pressure, belong to which kind of pressure piping. Different categories of pressure pipeline because of the importance of each different, accident harm degree, also different to the requirement of material. At the same time, should consider the use environment and conveying pipeline medium and medium degree of corrosion of the pipe body. Inserted into the bottom of steel pipe pile, for example, the tube in the splash zone corrosion rate for six times in the seabed soil; Tidal range zone 4 times of corrosion rate of the seabed soil. On the material selection and corrosion protection measures should pay special attention. (2) the machinability for material should possess good processability and weldability. 3. Durable and economical pressure pipeline, first of all should be safe and durable and the economy. A device, a batch of pipeline engineering, before the investment selection, a feasibility study when necessary, the economic and technical analysis, intends to choose the material can be destiny, economic and technical analysis, some materials slightly higher initial investment, but the use of reliable, maintenance cost province at ordinary times; Initial investment appears to be some of the material, but the poor reliability in operation, the high cost of maintenance, at ordinary times the high cost of whole life cycle.

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