What is api 620?
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What is api 620?
API 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks, is a standard developed and published by the American Petroleum Institute that gives requirements for the design and construction of large, welded storage tanks with pressures in their gas or vapor spaces of not more than 15 lbf/in.
How many types of storage tanks are there?
There are two main types of fuel storage tanks – Aboveground tanks and Underground tanks.

How long does it take to build an oil storage tank?
Short Answer: At Least 10 Weeks in Advance Depending on the complexity of your project, and if you plan on sole sourcing, getting a few quotes or going to a formal tender, this timeframe will vary from two months to over a year.
How large are oil storage tanks?
The most common above ground oil tank size is 275 gallons although capacity can range from 105 gallons to 500 gallons. A quick and simple way to determine if your oil tank has a capacity of 275 gallons is to measure the height, width and length of the tank.
