Compilation method: According to the Packer classification code, the fixed way code, the sitting Seal method code number, the seal way code and the Packer steel body maximum outside diameter, the working temperature/The work pressure difference six parameters arrange sequentially, carries on the model formulation, its form is as follows:
SHAPE * Mergeformat Code Description: Classification code: The first Chinese character with the category name of the letter of capital letters, combined with a variety of classification code combinations expressed.
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