Q195, Q215, Q235, Q345

Q235 represents: carbon structural steel - general plate is a kind of steel material. Q is the yield of this material, and 235 is the yield of this material, which is around 235. The yield value will decrease with the increase of material thickness.

Q235A, Q235B, Q235C, Q235D. This is the grade of distinction, represents, mainly the impact of the temperature is different!

A, B, C, D, the difference is the impact temperature in their performance. They are: Q235A, no impact; Grade Q235B, is 20 degrees room temperature shock;

Grade Q235C, 0 degree impact; Grade Q235D, it's a -20 impact. At different impact temperatures, the impact values are also different.

Element content: Sulfur content of A, B, C and D decreased successively; A and B have the same phosphorus content, followed by C, and D has less phosphorus content.