The Pipe Fabricators Blue Book
W.V. "Duffy" Graves was a pipe fitter/pipe fitter foreman for over 25 years. After retirement from Shell Chemical, he taught pipe fitting at Lee College in Baytown, Texas for several years while staying active in the pipefitting profession. During this time he saw the need for a handy, easy to use reference manual that could be carried in the field. The result was The Pipe Fitters Blue Book and its companion, The Pipe Fabricators Blue Book.