BL-FF-钢制管法兰盖

BL-FF-Blind Flange

BL-RF-钢制管法兰盖

BL-RF-Blind Flange

BL-MF-钢制管法兰盖

BL-MF-Blind Flange

BL-TG-钢制管法兰盖

BL-TG-Blind Flange

BL-RJ-钢制管法兰盖

BL-RJ-Blind Flange