Q641F-16PQ641F-16P气动球阀

上展式放料阀

YJ41WYJ41W氧气截止阀

J41WJ41W不锈钢法兰截止阀

H41WH41W升降式止回阀

GLH41W-YGLH41W-Y贯流式止回阀

Q41FQ41F国标软密封浮动球阀

H41型升降式止回阀H41型

国标闸阀Z41W国标闸阀Z41W

气动碟阀气动碟阀

BJ41BJ41保温截止阀

D673HD673H金属对夹式硬密封气动蝶阀