People such as engineers and others that work with pipes or plumbing know about ANSI flange tables. A flange is a rim or lip used in pipe systems. The various types of flange classes, like Class 150 give flange dimensions. The ANSI tables are basic standards for piping and flange sizes used in the United States. The American National Standards Institute (ANSI) tables are not the only ones used
. worldwide. There are standards and tables for British, Japanese and metric flanges. Find out about ANSI flange tables at http://www.solenoidvalvesuk.com/ANSI_FlangeTables.asp, http://www.controlandinstrumentation.com/resources/flanges.html, http://www.contractorsunlimited.co.uk/toolbox/flangepcd.shtml,
