Other standards detail the property and testing. requirements for gray and white iron castings, cast. iron pipe and fittings, and ductile iron castings. This volume also includes standards on. radiographic examination of castings to be used. with ASTMâs standard reference radiographs.
The free enterprise system in the United States developed soon  after the country gained its independence. This is a system that  allows people or entities to establish theiâ¦r own company, taking a  competitive stance with other businesses, and operate it for their  own profit.
Seen in the large, free enterprise is an organization of production and distribution in which individuals or family units get their real income, their living, by selling productive power for money to business units or enterprises, and buying with the money income thus obtained the direct goods and services which they consume.