43 40 00 Gas and Liquid Storage
43 42 00 Pressurized Tanks and Vessels
43 42 11Cast Iron Pressure Tanks43 42 13Ductile Iron Pressure Tanks43 42 21Welded Steel Pressure Tanks43 42 23Glass-lined Steel Pressure Tanks43 42 26Welded Steel Gas Storage Sphere43 42 33Stainless Steel Pressure Tanks43 42 36Aluminum Pressure Tanks43 42 41Metallic Specialty Pressure Tanks43 42 53Fiberglass Reinforced Plastic Pressure Tanks43 42 83Non-metallic Specialty Pressure Tanks