We are very familiar with Guangzhou shelves, so what kind of steel is used in Guangzhou shelves? This is a problem that all business users need to know clearly before buying them. This is related to the quality of Guangzhou shelf and service life and some later things. The following is by the tripod shelf factory Xiaobian for you to sort out some about the Guangzhou shelf steel material selection and material instructions.

First, most of the steel used in the shelf factories today is the national standard Q235. The Q represents the yield limit of this material, with the following 235, which refers to the yield value of this material, around 235MPa. The yield value decreases with the material thickness (plate thickness / diameter ≤ 16mm, yield strength 235MPa;16mm <plate thickness / diameter ≤ 40mm, yield strength 225MPa;40mm <plate thickness / diameter ≤ 60mm, yield strength 215MPa;60mm <plate thickness / diameter ≤ 100mm, yield strength 205MPa;100mm <plate thickness / diameter ≤ 150mm, yield strength 195MPa;150mm <plate thickness / diameter ≤ 200mm, yield strength 185MPa). Due to the moderate carbon content, good comprehensive performance, strength, plasticity and welding performance are better matched, more widely used.

Two, composed of Q + digital + quality grade symbol + deoxygen method symbol. Its steel crown is "Q", for the yield point of steel, the following number for the yield point value, in MPa for example Q235 for carbon structural steel with yield stress (σs) of 235MPa.

III. When necessary, the quality grade and deoxygen method can be marked behind the steel number. Quality grade symbol are A, B, C, D. Deoxygenation method symbol: F means boiling steel; b means semi-sedative steel: Z means sedative steel; TZ means special sedative steel, which is not marked, namely neither Z or TZ. For example, Q235-AF represents Class A boiling steel.
Some specialized purpose carbon steel, such as bridge steel, Marine steel, etc., basically use the representation of carbon structural steel, but at the end of the steel number of additional letters for the use.