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Paper production process is divided into two parts: pulping and papermaking.

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Cause of valve body leakage:
1. There are sand holes or cracks in the valve body;


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1. Runner: no shrinkage or shrinkage
2. Ball support method: floating (pedestal support)

Representation of cast steel grades for German, Russian, American and British standard valves (2)High alloy cast steel i...

Representation of cast steel grades for German, Russian, American and British standard valves (1)1. International Organi...

Indication method of cast steel valve material grade in ChinaAccording to gb5613-85, the grades of cast steel valves in ...

Indication of cast steel valve brandThe grade of cast steel valve shall be expressed according to gb5613-85, and ZG shal...

Classification of cast steel valvesCast steel valves can be classified into carbon steel and alloy steel according to th...

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