Standard |
UIC standard |
BS standard |
JIS standard |
ISCR standard |
China standard |
South-American standard |
Type |
UIC 54 / UIC 60 |
BS60A / BS75A / BS80A |
JIS37 / JIS50 |
ISCR50 / ISCR60 / ISCR70 |
A(I II) / B / III |
TJ45 / TJ57 |
Material |
45#,55#,etc |
Spring steel |