The plug assembly is installed in the hydraulic cylinder and used for guiding and fixing the guide under the guide. It consists of a plug and a copper block: the material of the copper block is tin bronze, and the plug is quenched and tempered 45 steel. It is the main component in the hydraulic end system of F1300/1600 drilling pump, corresponding to the fixed card in F500/800/1000 mixed mud pump.
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