rolled metal: classification, assortment, certification

Rolled metal - metal product, manufactured at mills by hot, warm or cold plastic deformation of the steel billet (rolling).

Rolling is the main method of forming metals, and allows you to make metal products of different shapes and sizes, as well as to form a certain structure and properties in them.

rolled metal: classification, assortment, certification

Classification of rolled metal
According to the method of manufacture, rolled metal products are divided into:

Cold-rolled metal products - the temperature of rolling products is below the recrystallization temperature.
Hot-rolled metal products - the temperature of rolling products is higher than the recrystallization temperature.
According to the materials used in the manufacture:

Black rolled metal - an alloy of iron with a small amount of carbon, Maybe, with the addition of alloying additives: nickel, chrome and copper. Ferrous metal is divided into steel and cast iron depending on the percentage of carbon..
Non-ferrous rolled metal - includes aluminum-based alloys, nickel, copper, magnesium, lead, lead, zinc.
Stainless steel - iron alloy alloyed with chromium, nickel, manganese.
By type of surface treatment:

Matte rolled metal.
Mirror metal.
Polished rolled metal.
Calibrated rolled metal.
By the size of the profile bar:

large rolled products;
average rental;
small rolled products.
Assortment of rolled metal
Finished metal products (rolled metal) divided into four main classes:

Flat or sheet products: Sheet steel, rolled steel, steel tape, etc.
Long products (products with different cross-sectional shapes): armature, circle, band, square, hexagon, wire rod, etc..
Shaped steel: channel, I-beam, profiles, corner profiles, rails, etc..
Pipe rolling: welded steel pipe, seamless, profile pipe, etc..
rolled metal: classification, assortment, certification

rolled metal: classification, assortment, certification

Certification of rolled metal
Rolled metal sold by suppliers is subject to mandatory certification.

The quality certificate is issued by the manufacturer and certifies the compliance of the manufactured products with the current regulatory requirements.: GUEST or TU.

The following parameters are certified:

Assortment: dimensions, length, allowable curvature, etc..
Chemical composition of steel;
Specifications: mechanical properties, surface finish, type and structure of steel, etc..
Assortment, the composition and technical conditions of rolled metal determine the subsequent conditions for its use and operation.