Not the most detailed list of the Pipeline Contractors in Connecticut. The following list will however point you in the right direction. I do not guarantee that all numbers will work. I would recommend using Google as a great tool to find out more precise information on the Contractors listed below.
B & D General Contractors
76 Lund Avenue, Waterbury CT
Birm-1 Construction Co., LLC
10 Riverside Drive, Ansonia CT
Delaware Pipeline Company, LLC
1 Sound Shore Drive # 303, Greenwich, CT 06830-7251
Marek Brothers Construction Co.
371 N Main Street, Southington CT