• Improper welding of X80 pipeline may cause cracks
• Brief introduction of API X52 pipeline steel
• The difference between PSL1 and PSL2
• Harm of inclusions in X70 pipeline steel
• API 5L pipeline pipe
• X52 steel plate surface quality standards that need to be met
• The basic production process of API 5L X60 pipeline steel
• The key to Q460D steel welding process
• What does the heat treatment of Q690 Steel include?
• Reasons for choosing Q690D steel

What is the difference between S235JR, S235JRG1, S235JRG2?

Different subjects

1. S235JR: European standard non-alloy structural steel, equivalent to national standard Q235B.

2. S235JRG1: indicates that the yield point of the steel bar is 235N/MM2, and A indicates the temperature of the weather resistance.

3. S235JRG2: ordinary carbon steel. The carbon content is 0.06-0.22%, with less than 0.25% being the most commonly used.

Different characteristics

1. S235JR: Slight and local defects such as pitting, concave surfaces, scratches, etc., whose depth (or height) does not exceed half of the thickness tolerance of the steel plate, are allowed on the surface, but the minimum allowable thickness of the steel plate and steel strip should be guaranteed.

2. S235JRG1: Tensile strength (σb/MPa): 375-500. The quenching temperature is 950℃, the salt bath furnace is heated, and the 10% NaCl brine is cooled and quenched.

3. S235JRG2: It belongs to low carbon steel, and each metal grade represents the lowest yield point of the steel when the thickness is less than 16mm.

We can supply the S235JR, S235JRG1, S235JRG2 with kinds of size, if you are interested, please contact me freely. We have our own S235JR, S235JRG1, S235JRG2 factory, so we can produce with your requirements.