1.1 This specification covers austenitic alloy steel pipe for use in high-temperature, corrosive, or nuclear pressure service. 1.2 Several grades of austenitic stainless steel are covered as indicated in Table 1. This specification covers the standard for centrifugally cast austenitic alloy steel pipe for use in high-temperature, corrosive, or nuclear pressure service. The pipe shall receive a heat treatment at the required temperature and holding time followe