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.
I will answer the first part of your question as it pertains to the United States however, you do not identify where you are from therefore I cannot possibly answer how the U.S. economy has played a role in your nations' economy. Capitalism or Free Enterprise is the system in the United States where by the means of production are privately owned. (However there are several U.S. government regulated corporations, among them the Post office and Amtrak) The characteristics of Capitalism: 1. means of production are privately owned. 2. founded on the principle of private property- the people have the right to own property. 3. profit motive- the right to earn money. 4. consumer sovereignty- people have the right to buy what they want...as long as they have the money to pay for it