ANSI: American National Standards Institute.

• B16.1-89: Cast Iron Pipe Flanges and Flanged Fittings.
• B16.4.85: Cast Iron Threaded Fittings; classes 125 and 250.
• B16.5-88: Pipe Flanges and Flanged Fittings.
• B16.10-86: Face- To -Face and End-To-End Dimensions of Valves.
• B16.34-88: Valves-Flanged, Threaded, and Welding End.
• B16.36-88: Orifice Flanges.
• B16.37-80: Hydrostatic Testing of Control Valves.
  

ASTM: American Standards for Testing and Materials.

• ASTM A - 536: Ductile Iron Castings.
• ASTM B-62: Composition Bronze or Ounce Metal Casting.
• ASTM B-584
• ASTM A-126 B: Gray Iron Casting for valves, Flanges, and Pipe Fittings.
• ASTM A 153
  

AWWA: American Water Works Association.

• C100: AWWA Standards for cast-iron pipe and fittings.
• C-104-85: Standard for Cement- Mortar Lining for Ductile-iron Pipe and Fittings for water.
• C-105-88: Standard for Polyethylene Encasement for Ductile-iron Piping for water and other Liquids.
• C111-85: Standard for Rubber Gasket Joint for Ductile-Iron and Gray-Iron Pressure Pipe and Fittings.
• C115-88: Standard for Flanged Ductile-Iron Pipe with Threaded Flanges.
• C150-81: Standard for Thickness Design of Ductile-Iron Pipe. .
  

DIN: Deutsche Industrie Normen.

• DIN 2501: Flanges Mating Dimensions.