Cotter Brothers Corporation : 978.777.5001 : Danvers, MA Cotter Brothers Corporation is a leading worldwide manufacturer and service provider of process piping modules... largest biotech companies. Cotter Brothers combines engineering proficiency, design capability and vast experience to create custom systems that increase efficiency and productivity.... 06.01.12 Flour Corp sends thank you on AMGEN work Read article... 04.22.12 SUCCESS STORY - Cotter Brothers featured in Spring 2012 issue of Management Today. Read article...