GB/T 13932-1992 General purpose industrial valves—Cast iron swing check valves

GB/T 13932-2016 Cast iron swing check valves

GB 152.1~152.4 GB/T 152.2-2014 Fasteners—Countersinks for countersunk head screws GB 152.1~152.4 GB 4216 GB/T 12252 GB/T 1184-1996 Geometrical tolerancing—Geometrical tolerance for features without individual tolerance indications 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 9112-2000 Types and parameters for steel pipe flanges GB/T 9112-2010 Types and parameters for steel pipe flanges GB/T 9113-2010 Integral steel pipe flanges GB/T 9113.1-2000 Integral steel pipe flanges with flat face or raised face GB/T 9113.2-2000 Integral steel pipe flanges with male and female face GB/T 9113.3-2000 Integral steel pipe flanges with tongue and groove face GB/T 9113.4-2000 Integral steel pipe flanges with ring-joint face 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 12232-1989 General purpose industrial valves—Flanged iron gate valves GB/T 12232-2005 General purpose industrial valves—Flanged iron gate valves JB/T 5300-2008 Guidelines for selecting materials for industrial valves JB/T 5300-1991 JBT 5300-1991 General valve materials JB/T 5300-2024 Industrial valve material selection guideline GB/T 152.3-1988 Fasteners--Counterbores for hexagon socket head screws and slotted cheese head screws JB/T 308-2004 Valves model designation method GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB/T 12232-2025 General purpose industrial valves—Flanged iron gate valves