The fake and inferior a36 hot rolled H beams, steel plates have no metallic luster and are light red or similar to pig iron for two reasons. 1. Its blank is adobe. 2. The rolling temperature of counterfeit and inferior materials is not standard, and their steel temperature is visually inspected. In this way, rolling cannot be carried out in the specified austenite area, and the performance of the steel plate will naturally not meet the standard.
A572 grade can be divided into five levels: a36 hot rolled H beams, A572 grade 42 (290), 50 (345), 55 (380) for riveted, bolted or welded structural parts; A572 grade 60 (415) and 65 (450) for bridge riveted and bolted structural parts or welded structural parts for other purposes. Chemical composition of A572 Gr50 steel: C: ≤ 0.20, Si: ≤ 0.40, Mn: ≤ 1.50, P: ≤ 0.04, S: ≤ 0.05, Nb: ≤ 0.005-0.05.
In March, the global crude steel output outside China fell by 11.89% to 68.08 million tons, the highest decline since 2009. Among the major steel producing regions, the EU led the decline, followed by India, Japan, South Korea and the United States. In the first quarter, the global a36 hot rolled H beams, crude steel output outside China was 209 million tons, down 4.29% year on year.