Fabricated from 1 in. sq. Carbon Steel Tubing with Expanded Metal Walkway Decking, Safety Railings with Toe Boards. (NOTE: To be used as Catwalk on the Top of the Tanks of the Tank Farm.) (NOTE: It is reported that there are 6- 6 ft. long Sections, 8- 7 ft. Sections and 2- 8 ft. long Sections. 3- of the 7 ft. long Sections are installed on the 30,000 gal. Vertical Tanks.) With LOT 4- DRUMS, 55- GAL. 3- are Steel and 1- is Plastic.