不銹鋼閘閥主要零件材料 Material for main parts 零件名稱 Part name 材料 Material Z24Y-16I -25I -40I Z24W-16P -25P -40P Q41W-16R -25P -40R 閥體、閥蓋 Body donnet 鉻鎳鋼Ci Ni steel 鉻鎳鈦鋼 Ci Ni Ti 鉻鎳鋁鈦鋼 Ci Ni Mo Ti steel 閥板Wedge gate 合金鋼+硬質合金 Alloy steel+corbiddealloy 閥桿Stem 合金鋼Alloy steel 閥桿螺母Stem nut 鋁鐵青銅 Al bronze 手輪Hand wheel 灰鑄鐵、可鍛鑄鐵 Csatiom forageable casriron