BJ41W良工阀门京蝶阀门保温法兰硬密封截止阀

DS/J41H良工阀门京蝶阀门水封法兰硬密封截止阀

J41H良工阀门京蝶阀门手动法兰式硬密封截止阀

J41F46良工阀门京蝶阀门手动衬氟法兰截止阀

J45F46良工阀门京蝶阀门衬氟直流截止阀

J45J良工阀门京蝶阀门直流式衬胶法兰截止阀

J44F46良工阀门京蝶阀门衬氟角式法兰截止阀

J41J-16良工阀门京蝶阀门手动法兰衬胶截止阀

DJ41Y良工阀门京蝶阀门 低温法兰硬密封截止阀

J941H良工阀门京蝶阀门电动法兰硬密封截止阀

J11W良工阀门京蝶阀门不锈钢内螺纹硬密封截止阀

BJ45H/W良工阀门京蝶阀门保温夹套直流式截止阀