Steel coil is sheet metal supplied in coil form. Depending on the production method, such coil is classified as hot-rolled, cold-rolled, galvanised or polymer-coated . Steel coil is used across industry, the main consumers being the construction and machine-building sectors.

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Types of steel coil and their application

Hot-rolled steel coils are produced by hot-rolling in hot strip mills, which can be semi-continuous, continuous, reversing or non-reversing. Coils can also be made through compact strip production . After hot-rolling, coils have a wide range of applications: they are used to make profiles and shapes for construction and machine-building, as well as general and special-purpose pipes. Hot-rolled coil is also used to produce cold-rolled coil.

 

Sector consuming hot-rolled steel sheet
Key product requirements
Standards
Delivery condition

Construction/pipe-manufacturing  for construction and general application
Weldability, high strength and ductility, crack resistance (including in negative temperatures); for individual applications – resistance to atmospheric corrosion
ASTM A36/А36М, ASTM A283/283М, ASTM A588, ASTM A709/A709M, EN 10025, IS 2062, GOST 6713, GOST 27772 and others
Hot-rolled, after normalisation-rolling or normalisation, after thermomechanical rolling

Large-diameter pipe (LDP)
High strength and shock-resistance (including in negative temperatures), corrosion resistance, guaranteed strength across the thickness and width of the coil, etc.
For oil and gas grades, the API and EN 10208 standards, user requirement specifications etc; for structures, EN 10025, EN 10225
Hot-rolled, after normalisation-rolling or normalisation, after thermomechanical rolling

Rolling – production of cold-rolled coils
Ductility, absence of surface and internal defects (delamination, blistering, non-metallic impurities, cracks etc)
ASTM A568, SAE J 403, ASTM A36, EN 10025 and their equivalents
Hot-rolled, after normalisation-rolling or normalisation (including with etching or with etching and oiling)

Machine-building
Weldability, high strength and ductility, low internal stress – suitability for laser and plasma cutting at automated facilities; high surface quality, absence of external and internal defects
EN 10149-2, EN 10111, EN 10083, EN 10025, ASTM A1011
Hot-rolled, after normalisation-rolling or normalisation, after thermomechanical rolling (including with etching or with etching and oiling)

Metal service centres
Narrow range of mechanical properties, uniform coil cuts and lengths, low internal stress, suitability for laser and plasma cutting at automated facilities; high surface quality, absence of external and internal defects
EN 10025, EN 10149-2, EN 10111
Hot-rolled, after normalisation-rolling or normalisation, after thermomechanical rolling (including with etching or with etching and oiling)

 

Cold-rolled steel coils are made from hot-rolled coils by rolling them in continuous or reversing mills without preheating. Cold-rolling allows for very precise sizes and high surface quality of the coiled steel and a greater range of mechanical properties. The main consumers of cold rolled coil are the construction, automotive and domestic appliance industries.

 

Sector consuming cold-rolled steel sheet
Key product requirements
Standards
Delivery conditions

Manufacturing coated product
Minimal variation in thickness, negative thickness tolerances, surface quality, bespoke surface finish, minimal oiling
EN 10130, EN 10209, EN 10346 (for chemical composition), ASTM A1008/A1008M and others
Hard-drawn, annealed

Construction/pipes
Coil mass up to 25 tonnes, negative thickness tolerances, oiling with a bespoke layer thickness of anti-degradant agent 
EN 10130, EN 10268
Hard-drawn, annealed

White goods/transportation
Narrow size tolerances, limits on chemical content and scope of mechanical properties; surface quality and purity; high ductility when producing items with complex shapes; oiling with a bespoke layer thickness of anti-degradant agent
EN 10130, EN 10268, SAE J403 and their equivalents
Annealed, hardened, following multi-stage heat treatment

Metal service centres/general use
Minimal variation in thickness, narrow thickness and width tolerances, absence of impurities, annealing colours, scratches etc, oiling with a bespoke layer thickness of anti-degradant agent
EN 10130, EN 10268 and their equivalents
Annealed

 

Galvanized steel coils comprise a steel product with a zinc coating applied at a specified thickness. The zinc coating protects the steel base from atmospheric exposure. The thickness of the coating can vary depending on the type of finished product and the conditions in which it is to be used. Galvanised steel coils are used in construction, the automotive industry and for making goods with decorative coatings.

 

Sector consuming galvanised coil product
Key product requirements
Standards
Passivation and surface-treatment methods

Construction
Minimal variation in thickness, negative thickness tolerances, wide zinc-coating class range (Z80-Z450); spangle pattern – normal shine (N), minimised shine (М) and absence of any spangle pattern (zero spangle)

EN 10346, DSTU EN 10346, ASTM A653, GOST Р 52246
Chemical passivation С, oil treated (О), passivised and oil treated (СО), post- parkerisation (Р), parkerised and oil treated (РО), post-application of insulating covering, etc

Automotive industry
Narrow geometric size tolerances, minimal variation in thickness, high-tensile and high-ductility steel brands (including heat strengthened), surface quality – suitability for application of painted-varnish coatings, absence of any spangle pattern (zero spangle)
EN 10346, DSTU EN 10346, ASTM A653, GOST Р 52246, special consumer demands

Manufacture of product with painted-varnish coating
Narrow geometric size tolerances, minimal variation in thickness, negative thickness tolerances, surface quality, wide zinc-coating class range (Z80-Z350), minimised shine (М) and absence of any spangle pattern (zero spangle)
EN 10346, DSTU EN 10346, ASTM A653, GOST Р 52246, client’s technical requirements

General industrial use (machine-building, instrument manufacturing, domestic goods)
Minimal variation in thickness surface quality - suitability for application of painted-varnish coatings, formability and suitability for deep drawing, spangle pattern – minimised shine (М) and production absent of any spangle pattern (zero spangle)
EN 10346, DSTU EN 10346, ASTM A653, GOST Р 52246

 

Polymer-coated steel coil comprises a hot- or cold-rolled steel base, either with or without a zinc coating, to which a decorative painted layer has been applied. Producing coated coiled steel involves preparing the strip chemically, applying paint with rollers and heat-treating the strips to polymerise (set) the paint. Coated coiled steel is used in construction, machine-building, and consumer-goods manufacturing. 

 

Sector
Application
Products

Construction
Outdoor use in construction
Metal shingles, corrugated board, sandwich-panels, detailing, etc.
Indoor use in residential buildings
Metal ceilings, skirting boards, decorative panels in heated and unheated premises 
Lifts, shutters, shelving, doors

Manufacturing of domestic appliances, furniture, and consumer goods
Domestic appliances
Electronics, decoders, sound systems, computers, set-top boxes
Heater casings, shelving, radiators, frames
Consumer goods
Metal furniture, lighting equipment

Automotive industry
Automobile doors, luggage racks, oil filters, dashboards, windscreen wipers

 

Buy steel coil from the manufacturer

 

Metinvest produces a wide range of hot-rolled, cold-rolled and galvanised steel coils for the construction, machine-building and other industries. They can be bought through its global sales network, which has 38 offices in Europe, Asia, Africa and America and 16 service centres in Ukraine, as well as through authorised dealers.

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