WJ41H国标波纹管截止阀

J11W-16T黄铜丝扣截止阀

J41W-16T黄铜法兰截止阀

DSJ41H法兰式水封截止阀

J41B氨用截止阀

J42B角式氨用截止阀

WJ44H德标直角式波纹管截止阀

J44H法兰角式截止阀

WJ61Y锻钢波纹管截止阀

J41Y锻钢自密封截止阀

J41H锻钢法兰截止阀

J11Y、J61Y丝口锻钢截止阀