不锈钢闸阀主要零件材料 Material for main parts 零件名称 Part name 材料 Material Z24Y-16I -25I -40I Z24W-16P -25P -40P Q41W-16R -25P -40R 阀体、阀盖 Body donnet 铬镍钢Ci Ni steel 铬镍钛钢 Ci Ni Ti 铬镍铝钛钢 Ci Ni Mo Ti steel 阀板Wedge gate 合金钢+硬质合金 Alloy steel+corbiddealloy 阀杆Stem 合金钢Alloy steel 阀杆螺母Stem nut 铝铁青铜 Al bronze 手轮Hand wheel 灰铸铁、可锻铸铁 Csatiom forageable casriron