Classification of stainless steel

- Apr 11, 2018-

Stainless steel can be divided into five categories: coils, plates, profiles, steel pipes and parts. The most important are rolls and plates. Profiles are various types of materials made of plates, including angle steel, flat steel, I-beam, and channel steel. The steel pipe mainly refers to the seamless steel pipe, and the opposite is the welded pipe, and the difference is whether it is formed once. Parts mainly refer to elbows and flanges and other small things. glenflange


Coil and sheet are actually the same, the factory form is not the same, the coil is a roll and a roll, the sheet is one sheet, if the factory is a sheet, also called the original board, usually a thick board, because it is very thick If you do, you can't make it into a roll. Usually, you can't roll it over 16mm.


There are volumes, boards, and many times are boards. The prices of rolls and boards are also different. If they are purchased, they are calculated according to the actual weight, so the price is high. The board is calculated theoretically and the price is low. The reason is that there is a difference, such as the actual thickness of 10mm may be 9.6mm, which will have a spread.pipe fittings


Stainless steel plate is divided into hot rolling and cold rolling according to the rolling process of the rolling mill (the rolling mill is the machine name of the rolled plate). Hot rolling is usually marked as NO.1 Cold rolling is marked as 2B or BA (BA is better than 2B surface, To be bright, close to the mirror, the best is the mirror, the mirror is not in stock, all need to be processed), for example, 304 is a purchase board, it means that the roll must be opened by the machine in the form of a flat board, this machine is the Kaiping machine. Through Kaiping Kaiping can be opened into different lengths, if not the conventional length is called open, meaning that the size of the fixed, because the customer according to actual needs, often put forward different length requirements, this time the volume becomes important, conventional The board cannot meet the requirements.welding overlay


Domestic cold rolling is generally less than 3mm, hot rolling is generally more than 3mm, 3mm thickness of the existing hot-rolled, but also cold-rolled, but the imported cold-rolled plate thickness can reach 4mm or even 6mm or less. Hot-rolled plates with a thickness of 3 mm to 12 mm are called mid-plates. Plates thicker than 12 mm are thicker than 120 mm. They are called hot-rolled plate, and cold-rolling is a cold-rolled plate.