Stainless steel can be divided into five categories: coil, sheet, profile, steel pipe and parts. The most important thing is the coil and the plate.
Stainless steel can be divided into five categories: coil, sheet, profile, steel pipe and parts. The most important thing is the coil and the plate.
Profiles are materials made of sheets of various shapes such as Angle steel, flat steel, I-steel and channel steel.
Steel pipe mainly refers to seamless steel pipe, and the opposite of seamless steel pipe is welded pipe. The difference is whether they form all at once.
Parts mainly refer to small things such as elbows and flanges.
Coil and plate are actually the same. They just come in different factory forms. Coil into a roll, board into a piece. If they leave the factory, they are plates, also known as original plates. They are usually thick plates because they are so thick. If so, you cannot scroll. Generally speaking, if it is more than 16 mm, it cannot roll.
There are rolls and plates, usually plates. Roll and plate prices are also different. If you buy coils, they are calculated based on actual weight, so the price is high. The sheet is calculated according to theory, so the price is low. The reason is that there is a difference. For example, the actual thickness of 10mm May be 9.6mm, and there will be a price difference in the middle.
Stainless steel plate is divided into hot rolling and cold rolling according to the different rolling process of the mill (mill is the name of the machine for rolling plate).
Hot rolling is usually labeled NO.1, and cold rolling is labeled 2B or BA (BA has a better, brighter surface than 2B, and is close to the mirror). The best is the mirror. Mirror is not in stock, need processing). For example, often buy 304. Plate, which means that the coil must be flattened into a plate by a machine, and this machine is the flattening machine.
It can be opened to different lengths by a press. If it is not a regular length, it is called a fixed opening, which means a fixed opening size, because customers often make different length requirements according to actual needs. This is where the volume becomes important. Conventional boards do not meet the requirements.
Domestic cold-rolled plates are generally below 3mm, and hot-rolled plates are generally above 3mm. The thickness of 3 mm is both hot and cold rolled, but the thickness of the imported cold rolled sheet can be less than 4 mm or even less than 6 mm.
The hot-rolled plate from 3 mm to 12mm is called the medium plate, and the hot-rolled plate above 12mm is called the thick plate. They can be more than 120 mm thick, also known as hot rolled medium thick plate, and cold rolled plate is cold rolled sheet.
