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ASME B16.1 Gray Iron Pipe Flanges and Flanged Fittings (Classes 25, 125, and 250) , 2005
- FOREWORD
- CONTENTS
- ASME B16 COMMITTEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve Actuators
- CORRESPONDENCE WITH THE B16 COMMITTEE
- GRAY IRON PIPE FLANGES AND FLANGED FITTINGS Classes 25, 125, and 250 [Go to Page]
- 1 SCOPE [Go to Page]
- 1.1 General
- 1.2 References
- 1.3 Quality Systems
- 1.4 Relevant Units
- 1.5 Service Conditions
- 1.6 Convention
- 1.7 Denotation [Go to Page]
- 1.7.1 Pressure Rating Designation.
- 1.7.2 Size.
- 2 PRESSURE-TEMPERATURE RATINGS [Go to Page]
- 2.1 General
- 2.2 Flanged Joints
- 2.3 Rating Temperature
- 2.4 Low-Temperature Ratings
- 2.5 Ductility
- 3 SIZE [Go to Page]
- 3.1 Nominal Pipe Size
- 3.2 Reducing Fittings
- 4 MARKING [Go to Page]
- 4.1 Fittings
- 4.2 Flanges
- 4.3 Material Class
- 5 MATERIALS [Go to Page]
- 5.1 Castings
- 5.2 Bolting
- 6 FITTING DIMENSIONS AND TOLERANCES [Go to Page]
- 6.1 Wall Thickness
- 6.2 Facing
- 6.3 Center-to-Face Dimensions [Go to Page]
- 6.3.1 Side Outlet Fittings.
- 6.3.2 Elbows
- 6.3.3 Tees, Crosses, and Laterals
- 6.3.4 True YŒs.
- 6.3.5 Reducers and Eccentric Reducers.
- 6.4 Center-to-Face Tolerances
- 6.5 Threaded Flanges [Go to Page]
- 6.5.1 General.
- 6.5.2 Class 125.
- 6.5.3 Class 250.
- 6.6 Flange Bolt Holes [Go to Page]
- 6.6.1 Flange Bolt Holes.
- 6.6.2 Bolt Circle Diameter.
- 6.6.3 Bolt Hole to Bolt Hole.
- 6.6.4 Bolt Circle Concentricity.
- 6.6.5 Tolerance.
- 6.7 Spot Facing
- 6.8 Crosses and Lateral Reinforcement
- 6.9 Drain Connections [Go to Page]
- 6.9.1 Threaded Connections.
- 6.9.2 Location Designation.
- 7 BOLT, NUT, AND GASKET DIMENSIONS [Go to Page]
- 7.1 Bolting
- 7.2 Gaskets
- 8 HYDROSTATIC TESTS
- 9 CERTIFICATIONS
- MANDATORY APPENDIX I DIMENSIONS OF FITTINGS IN U.S. CUSTOMARY UNITS
- MANDATORY APPENDIX II REFERENCES
- NONMANDATORY APPENDIX A QUALITY SYSTEM PROGRAM
- FIGURES [Go to Page]
- 1 Method of Designating Outlets of Reducing Fittings in Specifications
- 2 Class 25 Flanges
- 3 Class 25 Flanged Fittings
- 4 Class 125 Flanges
- 5 Class 125 Flanged Fittings
- 6 Class 250 Flanges
- 7 Class 250 Flanged Fittings
- 8 Class 125 Tees (Anchorage Bases)
- 9 Class 250 Tees (Anchorage Bases)
- 10 Drain Connections
- 11 Method of Designating Location of Tapped Holes for Drains When Specified
- TABLES [Go to Page]
- 1 Pressure-Temperature Ratings
- 2 Class 25 Flange and Bolting Dimensions
- 3 Dimesions of Class 25 Gray Iron Flanged Fittings
- 4 Class 125 Flanges and Bolting Dimensions
- 5 Dimensions of Class 125 Gray Iron Flanged Fittings
- 6 Class 250 Flange and Bolting Dimensions
- 7 Dimensions of Class 250 Gray Iron Flanged Fittings
- 8 Dimensions of Anchorage Bases for Straight and Reducing Class 125 Tees
- 9 Dimensions of Anchorage Bases for Straight and Reducing Class 250 Tees
- 10 Minimum Thread Length [Go to Page]