手动法兰截止阀 具体型号 材质区分如下：《国标》

J41H-16C 铸钢硬密封法兰截止阀 J41W-16P 不锈钢硬密封法兰截止阀 J41F-16P 不锈钢软密封法兰截止阀  J41Y-16P 不锈钢硬密封法兰截止阀

材质代号分类：《国标》

C 代表 铸钢  P 代表 不锈钢  I 代表铬钼钢  V 代表铬钼钒钢

压力等级《国标》

铸钢法兰截止阀J41H-16C J41H-25C J41H-40C J41H-64C J41H-100C J41H-160C J41H-320C

不锈钢法兰截止阀J41W-16P J41W-25P J41W-40P J41W-64P J41W-100P J41W-160P J41W-320P

软密封法兰截止阀J41F-16P J41F-25P J41F-40P J41F-64P J41F-100P J41F-160P J41F-320P

硬质合金法兰截止阀J41Y-16P J41Y-25P J41Y-40P J41Y-64P J41Y-100P J41Y-160P J41Y-320P