NKZ41H真空闸阀

BZ41H保温夹套式闸阀

PZ43H/Y链轮刀型闸阀

DZ41H/Y低温闸阀

Z41W美标闸阀

Z63Y焊接式油田闸阀

卡箍式油田闸阀

Z41W不锈钢闸阀，*

GHZ73X干灰闸阀

Z41H楔式闸阀

Q41F不锈钢球阀，*

Y43X不锈钢减压阀