SA572 Gr 42 carbon steel plate sheet for riveted construction

HG785D steel belongs to high strength welded structural steel. 785 refers to the tensile strength of steel plate is about 785MPa. The impact temperature of grade D steel plate is - 20℃. SA572 Gr 42 carbon steel plate sheet, HG785D steel plate has high yield strength and tensile strength, which is widely used in coal mining machinery, mining machinery, and other large steel structural parts, such as mining hydraulic support and crane.

SA572 Gr 42 carbon steel plate sheet, Hot-rolled steel coils are made of steel billets, which are made into strip steel by the rough rolling mill and the finishing mill after heating. The hr steel strip from the rolling mill behind the finishing rolling is cooled to a set temperature by laminar flow, and then coiled into a steel coil by the coiler. The cooled steel coil will undergo different processes according to the different needs of users, and is processed into steel plates, flat coils and slit steel strip products.

The hot rolling method is to heat the SA572 Gr 42 carbon steel plate sheet steel material to about 1000 ℃ ~ 1250 ℃ and use the rolling mill to roll it. The traditional hot rolling process is generally divided into the following two steps: the first step is to use the primary rolling mill or billet rolling mill to roll the ingot, billet or continuous casting billet into a certain shape and size of billet. This kind of SA572 Gr 42 carbon steel plate sheet rolling process is usually called semi-finished product production, also called blank production.

Strip steel is mainly used for the manufacture of welded pipes, clamps, washers, spring blades, saw blades, blades and other fields, so the SA572 Gr 42 carbon steel plate sheet, strip steel specifications are also relatively standardized. First, the strip width should be within 1300mm, if it is too wide, it will become a steel plate, and the machining is not allowed to be too wide, otherwise it will fail. Second, the strip steel length is not limited, and the strip steel can be coiled together after bending, reducing most of the space.