J61YJ61Y对焊式高温高压截止阀
面议J61YJ61Y对焊式高温高压截止阀
面议QJ-1,2,3,4,5,6,7QJ气动管路截止阀
面议DSJ4lH、DSJ41YDSJ4lH,DSJ41Y法兰水封截止阀
面议DSJ61H、DSJ61YDSJ61H,DSJ61Y焊接式水封截止阀
面议J41H、J41WJ41H,J41W美标法兰截止阀
面议J41H、J41WJ41H,J41W日标法兰截止阀
面议J41H、J41YJ41H,J41Y国标法兰截止阀
面议J41H、J41YJ41H,J41Y国标碳钢截止阀
面议WJ41H、WJ41YWJ41H,WJ41Y蒸汽波纹管截止阀
面议J41H、J41YJ41H,J41Y铸钢法兰截止阀
面议DJ61H、DJ61YDJ61H,DJ61Y锻钢低温截止阀
面议J41H/Y、J41WJ41H,J41Y锻钢法兰端截止阀
面议