This article introduces the engine important parts cylinder headvalve pipe hole and sealing trip on their technical method and analyse used in the machining center.
介绍了发动机上重要部件汽缸盖中气门导管孔和密封带在加工中心上的工艺方法，并对其进行了分析。
2
Shipbuilding . head of sounding pipes with self - acting valve . details of body.
造船工业。带自动阀的测深管测头。阀体详图。
3
Stainless steel valvehead and seats provide long service life.