DJ41Y-25PDJ41Y-25P低温截止阀

J41F46-16CJ41F46-16C 聚全氟衬里截止阀

J11YJ11Y锻钢截止阀

J41H-300LbJ41H-300Lb美标截止阀

BJ41WBJ41W保温截止阀

WJ41HWJ41H波纹管法兰截止阀

J41B-16/25/40J41B-16/25/40氨用阀截止阀

Jy41W/YJy41W/Y氧气截止阀

J41N-25/40J41N-25/40液化气截止

J61YJ61Y压力自紧式阀盖

J61YJ61Y焊接式截止阀

J11H-64J11H-64锻钢截止阀