闸阀4种类型装配图 CARBON STEEL FLANGED GATE VALVES(ANSI-CLASS300).dwg(114.78KB)，CARBON STEEL FLANGED GATE VALVES.dwg(108.98KB)，RESILIENT WEDGE GATE VALVES.dwg(185.05KB)，STAINLESS STEEL GATE VALVES FLANGED END.dwg(112.44KB)