Info regarding this book on a Chinese website:
Gentlemen, I think pcke2000 has found a bit of a real deal gold mine of info.
From that source:
"T003625 semi-auto rifle
Books: Chinese Book Dictionary: 1949-1992 Volume 15 Industrial Technology (Part 1)
Source: Classified by Subject—Comprehensive Books Hubei People's Publishing House " Chinese Book Dictionary: 1949-1992 Volume 15 Industrial Technology (Part 1)" page 378 (296 words)
"Semi-automatic rifle" compilation team.
National Defense Industry Press, March 1970. 178 thousand words. Summarizes the practical experience of semi-automatic rifle production, focuses on the problems that occur in production, analyzes the causes of the problems, and proposes solutions. Divided into 5 parts: the structural performance and functions of semi-automatic rifles, including the decomposition and combination, improvement and development of semi-automatic rifles; blank manufacturing of gun parts, process analysis of die forgings, common defects and preventive measures of die forgings, design examples of typical die forgings , Characteristics and requirements of investment casting, investment casting process, etc.; processing of typical semi-automatic rifle parts (barrel, receiver, gun core, firing bracket, buttstock, gun spring, cold stamping parts for gun); Heat treatment and surface treatment of gun parts; assembly and testing of guns.
The appendix at the end of the book gives reference materials such as relevant data and performance."