862 GB/T 12223-1989 部分回转阀门驱动装置的连接 Part-turn valve actuator attachment
863 GB/T 12224-1989 钢制阀门 一般要求 General requirements for industrial steel valves
864 GB/T 12225-1989 通用阀门 铜合金铸件技术条件 General purpose industrial valves—Specification of copper alloy castings 865 GB/T 12226-1989 通用阀门 灰铸铁件技术条件 General purpose industrial valves—Specification of flake graphite iron castings
866 GB/T 12227-1989 通用阀门 球墨铸铁件技术条件 General purpose industrial valves—Specification of spheroidal graphite iron castings
867 GB/T 12228-1989 通用阀门 碳素钢锻件技术条件 General purpose industrial valves—Specification of carbon steel forgings
868 GB/T 12229-1989 通用阀门 碳素钢铸件技术条件 General purpose industrial valves—Specification of carbon steel castings
869 GB/T 12230-1989 通用阀门 奥氏体钢铸件技术条件 General purpose industrial valves—Specification of austenitic steel castings
870 GB/T 12232-1989 通用阀门 法兰连接铁制闸阀 General purpose industrial valves—Flanged iron gate valves
871 GB/T 12233-1989 通用阀门 铁制截止阀与升降式止回阀 General purpose industrial valves—Casting iron globe valves and lift check valves
872 GB/T 12234-1989 通用阀门 法兰和对焊连接钢制闸阀 General purpose industrial valves—Flanged and butt-weld steel gate valves
873 GB/T 12235-1989 通用阀门 法兰连接钢制截止阀和升降式止回阀 General purpose industrial valves—Flanged steel globe valves and lift check valves
874 GB/T 12236-1989 通用阀门 钢制旋启式止回阀 General purpose industrial valves—Steel swing check valves
875 GB/T 12237-1989 通用阀门 法兰和对焊连接钢制球阀 General purpose industrial valves--Flanged and butt-weld end steel ball valves
876 GB/T 12238-1989 通用阀门 法兰和对夹连接蝶阀 General purpose industrial valves—Flanged and wafer butterfly valves