Pipes form a very important part in industries, infrastructure, plumbing, electricity work and what not. This means that knowingly and unknowingly we are always surrounded by pipes. There are a thousand categories of pipes available in the market and all of them are intended for different work. Some of them are used for transportation purpose whereas some of them are simply used for giving structural support. ASTM A333 is the standard specification given to all the welded as well as seamless steel, carbon and alloy pipes which are intended to be used at places of low temperatures. The ASTM A333 pipes are used as heat exchanger pipes and pressure vessel pipes.

As it was stated in the above section, that these pipes are used in the areas where temperature is extremely low, they are used in large ice cream industries, chemical industries and other such places. They are used as transportation pipes and are categorized into different grades. The classification of grades of these pipes is done on different factors like temperature resistance, tensile strength, yielding strength and chemical compositions. The ASTM A333 pipes are furnished into nine different grades which are designated by the following numbers: 1, 3, 4, 6, 7, 8, 9, 10, and 11.

These pipes have an NPS ½" to 36". Though different grades have different temperature strike test the average temperature that these pipes can stand is from – 45 degree C, to – 195 degree C. The ASTM A333 pipes must be made with the seamless or welding process where there must be no filler in the metal during the welding process.