I agree with CRG that the "Grinnell" book is a good one.
As for my favorites, I rely on two (2) texts:
1) "Design of Piping Systems", (c)1956 M.W. Kellogg Company
Library of Congress No. 56-5573.
2) "Introduction to Pipe Stress Analysis",(c)1986 Sam Kannappan, ISBN No.0-89464-706-7.
The...