J41F-16C 铸钢氨用法兰截止阀 J41F 聚四氟乙烯软密封 ¥240.00 J41F-25C 手动氨用截止阀 J41F 液化石油气氨气管路用截止阀 ¥240.00 J41F-25C 铸钢氨用截止阀 J41F 法兰氨用截止阀 DN125 ¥240.00 燃气专用截止阀 J41F-40C 氨用截止阀 DN50 高温高压截止阀 ¥240.00 J41F-40C 氨气、氮气、气体用截止阀 J41F 方口法兰截止阀 ¥240.00 J41B-16C 巴氏合金密封法兰氨用截止阀 氨气直通式截止阀 ¥240.00