"Wafer Type " CNS Standards List| General Requirements | Boric acid | Slotted Countersunk | Small Switch | Files | Polyester Canvas | Method Fluorescent | Method test | |
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CNS 12744
2017 Edition Wafer-Type Rubber-Seated Butterfly Valves 一般用蝶型閥 |
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CNS 12743
2017 Edition Butterfly Valves for Water Works (Wafer Type) 水道用蝶型閥（薄體型） |
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CNS 12744
1998 Edition Wafer-Type Rubber-Seated Butterfly Valves 一般用蝶型閥 |
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CNS 12743
1995 Edition Butterfly Valves for Water Works (Wafer Type) 水道用蝶型閥（薄體型） |
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