Industry-Specific Application Ratios for Different Steel Shapes

Release time:

2025-04-16

Application ratio of different shapes of steel in different industries

The application ratio of steel of different shapes in different industries will be affected by many factors, such as industry development trends, changes in market demand, steel performance characteristics, etc., and relevant data are difficult to accurately count. The following is a general situation:

Construction industry

According to relevant statistics, the steel consumption in the construction industry accounts for more than 40% of the national steel consumption. Among them, rebar (belonging to profiles) is the main construction steel, which is widely used in reinforced concrete structures and accounts for a large proportion, which may reach about 50% - 60% of construction steel.

I-beams, channel steels, angle steels and other profiles are used for the framework and support of building structures, accounting for about 20% - 30% of construction steel.

Thick steel plates are used for the foundation slabs of buildings, the connection nodes of steel structures and other parts, accounting for a relatively small proportion, which may be around 10% - 20%.

Steel pipes are used for building water supply and drainage, fire protection systems, etc., accounting for about 5% - 10%.

Machinery manufacturing industry

The machinery manufacturing industry accounts for about 20% of steel consumption. Simple cross-section profiles such as round steel and square steel are often used as blank materials for mechanical parts, such as shaft parts, accounting for 20% - 30% of mechanical steel.

Plates are used in mechanical manufacturing to manufacture equipment shells, workbenches, etc., accounting for about 30% - 40% of mechanical steel.

Steel pipes are used to manufacture pipelines in hydraulic systems, hollow shafts in mechanical structures, etc., accounting for 10% - 20%.

Complex cross-section profiles such as I-beams and channel steels are used to manufacture brackets and bases for large mechanical equipment, accounting for about 10% - 20%.

Automotive industry

In the automotive industry, steel accounts for about 70% of the total weight of a car. Among them, plates are the main form of steel for automobiles, used to manufacture body shells, doors, engine hoods, etc., accounting for 60% - 70% of automobile steel.

Round steel, square steel, etc. are used to manufacture automobile shaft parts, fasteners, etc., accounting for about 20% - 30%.

Steel pipes are used in automobile exhaust systems, brake systems, etc., accounting for a small proportion, probably around 5% - 10%.

Shipbuilding industry

For shipbuilding, the proportion of steel is more than 55%. Among them, plates are the main part of ship steel, used to manufacture the hull, deck, cabin, etc. of the hull, accounting for 70% - 80% of ship steel.

Profiles such as angle steel and channel steel are used for the skeleton structure of ships, accounting for about 10% - 20%.

Steel pipes are used for water supply and drainage systems, ventilation systems, etc. of ships, accounting for about 5% - 10%.

Energy industry

In the energy industry, steel pipes are an important form of steel, which is widely used in the exploitation and transportation of oil and natural gas. Seamless steel pipes are used for oil drill pipes, oil pipes, etc., and welded steel pipes are used for long-distance transportation pipelines. Steel pipes account for about 50% - 60% of steel used in the energy industry.

Plates are used to manufacture oil storage tanks, natural gas storage tanks, etc., accounting for about 30% - 40%.

Profiles are used for supporting structures of energy equipment, etc., accounting for a relatively small proportion of about 10% - 20%.

Aerospace industry

The use of steel in the aerospace industry is relatively special. In modern aircraft design, the proportion of steel in the overall structural weight is maintained at about 5% to 10%. Among them, high-strength alloy steel is often used in the form of bars (similar to round steel and square steel) to manufacture key load-bearing components such as landing gear systems and main beam structures, accounting for about 50% - 60% of aviation steel.

Sheets are used to manufacture structural parts and skins of some aircraft, accounting for about 30% - 40%.

Pipes are used for pipelines such as hydraulic systems and fuel systems of aircraft, accounting for a relatively small proportion of about 10% - 20%.

 

The above proportions are only rough estimates, and the actual application proportions will vary depending on factors such as the industry development stage, technological progress, and market demand.

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