How do test the quality of JIS SMA490CW hot rolled weathering steel

In the second step of hot rolling process, different finished mills are used to roll billets or continuous casting billets into finished steel of proper shape and size. This JIS SMA490CW hot rolled weathering steel production process is called finished product production, which is generally divided into two stages of rough rolling and finish rolling. In the roughing stage, a large amount of reduction (reduction per pass) is adopted to reduce the number of passes and improve the output; after roughing, the finishing stage is entered, and the finishing is carried out with a small amount of reduction to achieve a good surface and accurate JIS SMA490CW hot rolled weathering steel size.

Mechanical properties of JIS SMA490CW hot rolled weathering steel, Q420qENH steel plate:
The thickness of Q420qENH is not more than 50mm, the yield strength is not less than 420MPa, the tensile strength is not less than 540, and the elongation is not less than 19%.
The thickness of Q420qENH is 50mm-100mm, the yield strength is not less than 410MPa, the tensile strength is not less than 410, and the elongation is not less than 19%.

Increased demand for railway steel. Entering 2021, the "eight vertical and eight horizontal" high-speed railway network will be encrypted. Considering that the key tasks of railway construction will be tilted towards high-speed railways and inter-city railways, it is expected that the steel demand for urban rail and high-speed railways will reach more than 25 million tons this year.

There is a silo technology R&D center in our company with many experts. Our technical backbones go abroad to study advanced technologies regularly to make our technology and products leading in the world. We provide our customers with JIS SMA490CW hot rolled weathering steel high-quality steel plates, the excellent quality from specialty. With good reputation, high-quality products, strong strength, and low prices, we welcome the clients from the world to come to visit our factory.