43.42.00 Pressurized Tanks and Vessels
43.42.83 Non-metallic Specialty Pressure Tanks
43.42.11 Cast Iron Pressure Tanks 43.42.13 Ductile Iron Pressure Tanks 43.42.21 Welded Steel Pressure Tanks 43.42.23 Glass-lined Steel Pressure Tanks 43.42.26 Welded Steel Gas Storage Sphere 43.42.33 Stainless Steel Pressure Tanks 43.42.36 Aluminum Pressure Tanks 43.42.41 Metallic Specialty Pressure Tanks 43.42.53 Fiberglass Reinforced Plastic Pressure Tanks 43.42.83 Non-metallic Specialty Pressure Tanks