National Standard: GB/T, GBT
              
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Std ID Description (Standard Title)
GB/T 9121.2-2000 Loose plate steel pipe flanges with weld-on collar with male and female face
GB/T 9121.3-1988 Loose plate steel pipe flanges with weld-on collar with raised face for PN 1. 6MPa (16 bar)
GB/T 9121.3-2000 Loose plate steel pipe flanges with weld-on collar with tongue and groove face
GB/T 9121.4-1988 Loose plate steel pipe flanges with weid-on collar with raised face for PN 2. 5MPa (25 bar)
GB/T 9121.5-1988 Loose plate steel pipe flanges with weld-on collar with male and female face for PN 1. 6MPa (16 bar)
GB/T 9121.6-1988 Loose plate steel pipe flanges with weld-on collar with male and female face for PN 2. 5MPa (25 bar)
GB/T 9121-2010 Loose plate steel pipe flanges with weld-on collar
GB/T 912-1989 Hot-rolled plain carbon and low alloy structural steel sheets and strips
GB/T 9122.1-1988 Loose plate steel pipe flanges with lapped pipe end for PN 0. 6MPa (6 bar)
GB/T 9122.2-1988 Loose plate steel pipe flanges with lapped pipe end for PN 1. 0MPa (10 bar)
GB/T 9122-2000 Loose plate steel pipe flanges with lapped end
GB/T 9122-2010 Loose plate steel pipe flanges with lapped pipe end and pressed collar pressed collar with long neck
GB/T 9123.10-1988 Steel pipe blank flanges with raised face for PN 2. 5MPa (25 bar)
GB/T 9123.11-1988 Steel pipe blank flanges with raised face for PN 4. 0MPa (40 bar)
GB/T 9123.1-1988 Steel pipe blank flanges with flat face PN 0. 25MPa (2. 5 bar)
GB/T 9123.1-2000 Steel pipe blank flanges with flat face or raised face
GB/T 9123.12-1988 Steel pipe blank flanges with raised face PN 2. 0MPa (20 bar)
GB/T 9123.13-1988 Steel pipe blank flanges with raised face for PN 5. 0MPa (50 bar)
GB/T 9123.14-1988 Steel pipe blank flanges with raised face for PN 10. 0MPa (100 bar)
GB/T 9123.15-1988 Steel pipe blank flanges raised face for PN 15. 0MPa (150 bar)
GB/T 9123.16-1988 Steel pipe blank flanges with raised face for PN 25. 0MPa (250 bar)
GB/T 9123.17-1988 Steel pipe blank fanges with male and female face for PN 1. 6MPa (16 bar)
GB/T 9123.18-1988 Steel pipe blank flanges with male and female face for PN 2. 5MPa (25 bar)
GB/T 9123.19-1988 Steel pipe blank flanges with male and female face for PN 4. 0MPa (40 bar)
GB/T 9123.20-1988 Steel pipe blank flanges with male and female face for PN 5. 0MPa (50 bar)
GB/T 9123.21-1988 Steel pipe blank flanges with male and female face for PN 10. 0MPa (100 bar)
GB/T 9123.2-1988 Steel pipe blank flanges with flat face for PN 0. 6MPa (6 bar)
GB/T 9123.2-2000 Steel pipe blank flanges with male and female face
GB/T 9123.22-1988 Steel pipe blank flanges with male and female face for PN 15. 0MPa (150 bar)
GB/T 9123.23-1988 Steel pipe blank flanges with male and female face for PN 25. 0MPa (250 bar)
GB/T 9123.24-1988 Steel pipe blank flanges with tongue and groove face for PN 1. 6MPa (16 bar)
GB/T 9123.25-1988 Steel pipe blank flanges with tonges and groove face for PN 2. 5MPa (25 bar)
GB/T 9123.26-1988 Steel pipe blank flanges with tongue and groove face for PN 4. 0MPa (40 bar)
GB/T 9123.27-1988 Steel pipe blank flanges with tongue and groove face for PN 5. 0MPa (50 bar)
GB/T 9123.28-1988 Steel pipe blank flanges with tongue and groove face for PN 10. 0MPa (100 bar)
GB/T 9123.29-1988 Steel pipe blank flanges with tongue and groove face for PN 15. 0MPa (150 bar)
GB/T 9123.30-1988 Steel pipe blank flanges with tongue and groove face for PN 25. 0MPa (250 bar)
GB/T 9123.31-1988 Steel pipe blank flanges with ring-joint face PN 2. MPa (20 bar)
GB/T 9123.3-1988 Steel pipe blank flanges with flat face for PN 1. 0MPa (10 bar)
GB/T 9123.3-2000 Steel pipe blank flanges with ring-joint face
GB/T 9123.32-1988 Steel pipe blank flanges with ring-joint face for PN 5. 0MPa (50 bar)
GB/T 9123.33-1988 Steel pipe blank flanges with ring-joint face for PN 10. 0MPa (100 bar)
GB/T 9123.34-1988 Steel pipe blank flanges with ring-joint face for PN 15. 0MPa (150 bar)
GB/T 9123.35-1988 Steel pipe blank flanges with ring-joint face for PN 25. 0MPa (250 bar)
GB/T 9123.36-1988 Steel pipe blank flanges with ring-joint face for PN 42. 0MPa (420 bar)
GB/T 9123.4-1988 Steel pipe blank flanges with flat face for PN 1. 6MPa (16 bar)
GB/T 9123.4-2000 Concrete Test Hammer
GB/T 9123.5-1988 Steel pipe blank flanges with flat face for PN 2. 0MPa (20 bar)
GB/T 9123.6-1988 Steel pipe blank flanges with raised face for PN 0. 25MPa (25 bar)
GB/T 9123.7-1988 Steel pipe blank flanges with raised face for PN 0. 6MPa (6 bar)
GB/T 9123.8-1988 Steel pipe blank flanges with raised face for PN 1. 0MPa (10 bar)
GB/T 9123.9-1988 Steel pipe blank flanges with raised face for PN 1. 6MPa (16 bar)
GB/T 9123-2010 Steel pipe blank flanges
GB/T 9124-1988 Butt-welding ends for steel pipe flanges
GB/T 9124-2000 Specification for steel pipe flanges
GB/T 9124-2010 Specification for steel pipe flanges
GB/T 9125-1988 Specification for steel pipe flanges
GB/T 9125-2003 Fasteners for pipe flange joints
GB/T 9125-2010 Fasteners for pipe flange joints
GB/T 9126.1-1988 Asbestes rubber gaskets for steel pipe flanges with full face
GB/T 9126.2-1988 Asbestes rubber gaskets for steel pipe flanges with raised face
GB/T 9126.3-1988 Asbestes rubber gaskets for steel pipe flanges with male and female face
GB/T 9126.4-1988 Asbestes rubber gaskets for steel pipe flanges with tongue and groove face
GB/T 9126-2003 Pipe flange with non-metallic flat gasket size
GB/T 9126-2008 Dimensions of non-metallic flat gaskets for pipe flanges
GB/T 9127-1988 Tussah silk fabrics
GB/T 9127-2007 Tussah silk fabrics
GB/T 9128.1-1988 Octagonal metallic ring gaskets for steel pipe flanges joints
GB/T 9128.2-1988 Oval metallic ring gaskets for steel pipe flange joint
GB/T 9128-2003 Dimensions of metallic ring-joint gaskets for use with steel pipe flanges
GB/T 9129-1988 Specification for asbestes rubber gasket for steel pipe flanges
GB/T 9129-2003 Specifications of Non-metallic flat gaskets for pipe flanges
GB/T 9130-1988 Specification for metallic ring gasket for steel pipe flanges joint
GB/T 9130-2007 Specification of metallic ring-joint gaskets for steel pipe flanges
GB/T 9131-1988 Pressure-temperature ratings for steel pipe flanges
GB/T 9138-1988 Concrete Test Hammer
GB/T 9138-2015 Rebound test hammer
GB/T 9139.1-1988 Hydraulic excavators--Classcifiation
GB/T 9139.2-1996 Hydraulic excavators--Technical specifications
GB/T 9139-2008 Hydraulic excavators -- Technical specifications
GB/T 9140-1996 Hydraulic excavators--Construction and performance
GB/T 9141-1988 Hydraulic excavators--Testing method of structure strength
GB/T 9142-1988 Concrete mixers--Specification
GB/T 9142-2000 Concrete mixers
GB/T 9143-1988 Quality standard of coal for fixed-bed gas producer at atmospheric pressure
GB/T 9143-2001 Specification of coals for atmospheric fixed-bed gas producer [including MODIFICATION 1]
GB/T 9143-2008 Specifications of coal for atmospheric fixed-bed gasifier
GB/T 9144-1988 General purpose screw threads--Selected sizes for commercial screws, bolts and nuts
GB/T 9144-2003 General purpose metric screw threads -- Preferable plan
GB/T 9145-1988 General purpose screw threads--Limits of sizes for commercial bolt and nut threads--Medium quality
GB/T 9145-2003 General purpose metric screw threads -- Limits of sizes for the screw threads of medium quality and preferable plan
GB/T 9146-1988 General purpose screw threads--Limits of sizes for commercial bolt and nut threads--Coarse quality
GB/T 9146-2003 General purpose metric screw threads -- Limits of sizes for the screw threads of coarse quality and preferable plan
GB/T 9149-1988 General specification for magnetic particle clutch
GB/T 9149-2008 General specification for magnetic particle clutch
GB/T 9150-1988 Bearing units--Classification
GB/T 9151-1988 Terms of drilling engineering
GB/T 915-1995 Bismuth
GB/T 915-2010 Bismuth
GB/T 9155-1988 Hollow shaped steel door