WJ41H德标波纹管截止阀

J65Y直流式对焊截止阀

BJ45直流式保温截止阀

BJ41H保温截止阀

J61H/Y高温高压截止阀

J45J衬胶直流式截止阀

J41Y锻钢自密封截止阀

J11Y、J61Y丝口锻钢截止阀

BJ41Y锻钢保温截止阀

WJ11Y、WJ61Y锻钢波纹管截止阀

J41H、J41Y锻钢法兰端截止阀

J41F46衬氟截止阀