对夹旋启式双瓣止回阀 wafer swing double-disc check valve H76H/H76X-16

对夹单瓣旋启式止回阀 wafer single-disc swing check valve H74H-16

对夹升降式止回阀 wafer lift check valve H71H-40

国标机械部法兰球阀 GB JB flange ball valve Q41F-16

日标法兰球阀 JIS flange ball valve Q41F-10K

日标高平台法兰球阀 JIS high-platform flange ball valve Q41F-10K

德标三片式法兰球阀 DIN 3PC flange ball valve Q41F-40

德标高平台法兰球阀 DIN high-platform flange ball valve Q41F-16

国标高平台法兰球阀 GB high-platform ball valve Q41F-25

美标高平台球阀 ANSI high-platform ball valve Q41F-150LB

锻钢碳钢国标升降式止回阀 H41H-16/25/40

国标化工部固定球阀 GB HG TB ball valve Q347F-16