Standard Practice for Selection and Application of Piping System Materials
ASME Boiler and Pressure Vessel Code, Section IX, Welding Qualifications Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://www.asme.org.
AWWA
Steel Pipe Flanges for Waterwork Service 4 in. through 144 in.