GB /T 1222-2007 Spring Steels
|
50CrVA
(A23503)
|
|
GB /T 3077-1999 Alloy Structure Steels
|
50CrVA
(A23503)
|
|
GB /T 5218-1999 Alloy spring steel wires
|
50CrVA
(A23503)
|
|
YB /T 5058-2005 Cold-rolled spring and tool steel strips
|
50CrVA
|
|
GB 3525-1983 Cold-rolled spring and steel strips
|
50CrVA
|
|
Q/BQB 516-2019 Spring steel wire rod
|
50CrVA
|
|
GJB 1951-1994 Specification for quality structure steel bars for avication
|
50CrVA
|
|
HB /Z 136-2000 Heat treatment process of aviation structural steel
|
50CrVA
|
|