GB/T 12232-2025 General purpose industrial valves—Flanged iron gate valves

GB/T 12232-2005 General purpose industrial valves—Flanged iron gate valves

GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 5796.1-1986 Metric trapezoidal screw threads—Profile GB/T 5796.1-2005 Trapezoidal screw threads—Part 1:Profiles GB/T 5796.1-2022 Trapezoidal screw threads—Part 1:Profiles GB/T 5796.2-1986 Metric trapezoidal screw threads—System of diameter and pitch GB/T 5796.2-2005 Trapezoidal screw threads—Part 2:General plan GB/T 5796.2-2022 Trapezoidal screw threads—Part 2:General plan GB/T 5796.3-1986 Metric trapezoidal screw threads—Basic dimensions GB/T 5796.3-2005 Trapezoidal screw threads—Part 3:Basic dimensions GB/T 5796.3-2022 Trapezoidal screw threads—Part 3:Basic dimensions GB/T 5796.4-1986 Metric trapezoidal screw threads—Tolerances GB/T 5796.4-2005 Trapezoidal screw threads—Part 4:Tolerances GB/T 5796.4-2022 Trapezoidal screw threads—Part 4:Tolerances GB/T 12220-1989 General purpose industrial valves—Marking GB/T 12220-2015 Industrial valves—Marking GB/T 12221-1989 Metal valves for use in flanged pipe systems—Face-to -face and centre-to-face dimensions GB/T 12221-2005 Metal valves—Face to face,end to end,center to face and center to end dimensions GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB/T 12222-2005 Multi-turn valve actuator attachments GB/T 12222-2023 Multi-turn valve actuator attachments GB/T 13927-1992 Pressure testing for general purpose valves GB/T 13927-2008 Industrial valves—Pressure testing GB/T 13927-2022 Industrial valves—Pressure testing GB/T 13927-2022 Industrial valves—Pressure testing GB/T 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 17241.1-1998 Synoptic table for cast iron pipe flanges GB/T 17241.1-2024 Cast iron pipe flanges—Part 1:PN designated JB/T 7928-2014 Industrial Valve Supply Requirements JB/T 7928-1999 JBT 7928-1999 General valve Supply requirements