Marine Valve, Gate Valve, Check Valve manufacturer / supplier in China, offering JIS F7480 5K 10K Cast Iron Wafer Type Marine Butterfly Valve, JIS F7369 Marine Stsndard 16K Cast Iron Flanged Gate Valve for Seawater/Freshwater/Oil Pipelines, JIS F7364 10K Marine Flanged Cast Iron Gate Valve with Bronze Trim and so on.