plate stem 平板艏材 ; 平板船首柱
fashion plate stem 板弯艏材 ; 弯板艏柱
plate welded stem 钢板焊接首柱
fashion-plate stem 钢板装配船首材
shaped plate stem 弯板首柱
flat plate stem 平板艉
stem chrome plate 杆部镀铬
steel plate stem 钢板首柱
Loosen and remove the diaphragm lock nut and lock washer, pressure plate and diaphragm from the valve stem.
松开和拆卸隔膜锁紧螺母和锁紧垫圈，从阀杆上往下压阀盘和隔膜。
The plate keel to be connected firmly with stem and stern frame.
平板龙骨应与艏柱和艉框架牢固地连接。
Stem should be 400 series stainless steel, can not stem exposed to the butterfly plate fasteners.
阀杆应该是400系列不锈钢，不能将阀杆暴露在蝶板紧固件上。
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