• For flammable, non-flammable, toxic and/or liquefied compressed gases
• Protective housing
• No bottom fittings
• Pressures usually above 40 psi

• For variety of hazardous and non-hazardous materials
• Fittings and valves normally visible at the top of the tank
• Some may have bottom outlet valve
• Pressures usually below 25 psi

• For flammable liquids (e.g., Petroleum crude oil, ethanol)
• Protective housing separate from manway
• Bottom outlet valve
• Pressures usually below 25 psi

• For general freight that carry bulk or non-bulk packages
• May transport hazardous materials in small packages or "tote bins"
• Single or double sliding door

• For bulk commodities and bulk cargo (e.g., coal, ore, cement and solid granular materials)
• Bulk lading discharged by gravity through hopper bottom doors when doors opened