PZ41H排渣闸阀

DSZ41H/DSZ44H水封闸阀

BZ41H/W碳钢不锈钢保温闸阀

Z41H型Z41H型法兰楔式闸阀

波纹管闸阀波纹管闸阀

NKZ41H真空法兰闸阀

Z41T-10型楔式闸阀

Z941W-16P/R电动闸阀

Z44T/W-10型暗杆楔式闸阀

Z43型铸钢平板闸阀

Z40H（W）（Y）美标闸阀

Z973X-0.6/1.0/1.6电动浆液阀