clean equipment standard to design and manufacture;complying with the requirements of pressure vessel at the same time; ( )inner surface treatment mechanical polishing ra" . μm,and then performing the mirror process; ( )outer surface treatment mechanical polishing ra" . μm,and then performing the matting...
clean equipment standard to design and manufacture;complying with the requirements of pressure vessel at the same time; ( )inner surface treatment mechanical polishing ra" . μm,and then performing the mirror process; ( )outer surface treatment mechanical polishing ra" . μm,and then performing the matting...
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