Metallic materials—Rockwell hardness test—Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T)
NORMA vydaná dňa 31.12.2012
Designation standards: GB/T 230.3-2012
Note: NEPLATNÁ
Publication date standards: 31.12.2012
Country: Chinese technical standard
Kategória: Technické normy GB