Q: What advanced material is used in the 600MW demonstration fast reactor nuclear project in China?
A: Specially developed 316H stainless steel pipe is used as a key material for equipment in this fourth-generation nuclear reactor project-5.
Q: What are the main grades used for precision seamless steel tubes (cold drawn or cold rolled)?
A: Common grades include 10#, 20#, 35#, 45#, 40Cr, and 16Mn-8.
Q: For geological drill pipes, what are some specific Chinese grades?
A: Grades like DZ40 and DZ50 are specified under YB/T5052-1.
Q: What is the primary use of seamless pipes made from grade 27SiMn?
A: It is commonly used for hydraulic support columns in mining-1.
Q: Which standard covers seamless pipes for shipbuilding using carbon and carbon-manganese steel?
A: GB/T 5312-1999, with grades like Q320, Q360, Q410, Q460, Q490-1.
