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How many ways are there to distinguish the quality of Q345B steel plate?

How many ways are there to distinguish the quality of Q345B steel plate?
Jan 06, 2021

1. Observe the thickness of the base steel plate and the thickness of the sub-film
Q345B steel plate is composed of base steel plate and colorful retroperitoneum or coating. You must first consider the thickness of the base steel plate and the post-peritoneal coating. The better Q345B steel base steel plate is 0.15~0.47mm, and the thickness of the sub-film or coating is usually only 0.16mm or less. From the perspective of affecting the service time of Q345B steel plate, the thickness of the base steel plate is very important.

2. Observe the exposed edges of Q345B steel plate
To obtain a Q345B steel plate, I first observe whether the Q345B steel plate is exposed to the Q345B steel plate, such as the cross-section, etc., whether the crystals are fine, gray, dark, and residue. If the cross-section is a fine crystal type, the quality is better.

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3. Listen to the sound
Hit the Q345B steel plate with your fingers or with a hard block. If the material is weak, the sound that comes out is muffled, the sound of metal materials is not significant, and the sound of metal materials with good materials is more loud and crisp.

4. Check the quality of Q345B steel plate
Is there an inspection standard of the relevant department? If possible, go to the manufacturer of Q345B steel plate to visit and inspect.

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