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.
The advantages of a free market economy (and the disadvantages of. command economies) 1. Efficiency. Free market economies are very competitive. Most of their. industries are assumed to be perfectly competitive, and so they will use their. resources wisely and efficiently to make them more profitable.