API STD 600
發(fā)布時(shí)間:2024-03-22 11:39:48 點(diǎn)擊量:1392
Steel Gate Valves—Flanged and Butt-welding Ends, Bolted Bonnets
鋼制閘閥-法蘭和對(duì)焊端、螺栓連接閥蓋
Steel Gate Valves—Flanged and Butt-welding Ends, Bolted Bonnets
鋼制閘閥-法蘭和對(duì)焊端、螺栓連接閥蓋