It should be called S355J2+N now.
N means normalization.
If DIN and GB standards are strictly consistent,
Q345D 16mm (inclusive) and Q390D above 16mm.
Still want to normalize.
You need this board to find me.
Shanghai Industry Co., Ltd. @ Mr. Yu
Professional numerical control flame cutting numerical control fine plasma cutting external processing
Drilling of NM500 wear plate and plasma cutting of Hardox500 wear plate