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Corrugated Steel Production Process

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Corrugated steel is a very durable steel, now the use of the building site is very large, it is the concrete structure of the defects of the replacement material. Corrugated steel has many advantages, such as: very durable, shorten the construction time, green environmental protection and so on. Apply to a variety of environment, currently in rural pastoral city buildings, ocean and so on are applied corrugated steel. And the service life of corrugated steel is very long, which greatly saves the maintenance period of the building, Corrugated Steel which saves the capital and the environment. Below, the little series for you briefly introduce the type of corrugated steel components, corrugated steel production technology and production equipment.

I. Types of corrugated steel components in China three main structural forms are used: a. Large-scale highway culvert with corrugated steel plate (span of over 4m). annular corrugated pipe; spiral corrugated pipe

Second, the production process of corrugated steel

The metal corrugated pipe is formed by rolling or assembling a corrugated plate made of hot rolled steel sheet (coil). The general thickness is 1.6-8mm, steel mainly has Q235 (SS400), Q345 and so on, Corrugated Steel at present, the common processing methods for rolling and molding two kinds of rolling molding method can be divided into two kinds, one is the first round into a ripple, the other is to shape the steel plate into corrugated tiles and then put it into a corrugated pipe, the first method by the size of the tube and the conditions of transport restrictions, the diameter can not be too large, The diameter of the pipe is generally 0.5-2.5 m, Corrugated Steel and the length of each section is about 3 meters.

Corrugated pipe is the hot rolled steel plate After the indentation, can increase the stiffness of the Tube section and the resistance to the pressure of the tube shaft, before the factory using hot-dip galvanizing process and construction site spraying asphalt, double anti-corrosion treatment to ensure the service life, Corrugated Steel with this kind of pipe section built culvert is called steel corrugated culvert.

Production process Flow-type: rolling plate-shearing process-rotary cylinder-welding-rolling wave-welding flange-PUNCHING (drilling)-Hot Dip galvanized-assembly-asphalt anti-corrosion-Backfill construction assembly; Type: Coil plate-shearing process-cold bending molding-arc-punching-hot dip galvanizing-assembly-asphalt anticorrosion-Backfill construction

Third, Corrugated Steel corrugated steel type of production equipment cold bending corrugated steel production equipment are: metal corrugated steel plate cold bending forming unit (single sheet corrugated sheet cold bending forming unit), Metal corrugated steel plate arc machine (according to the design of corrugated steel rolled into a certain radian), metal corrugated steel rolling machine (whole tube rolling wave machine), corrugated steel plate punching equipment. Equipment Cost: Single sheet corrugated plate cold bending molding unit 2.5067 billion yuan (hydraulic 700,000 yuan), starting machine 20.3 million yuan (installed numerical control plus 35,000);, Corrugated Steel the whole tube rolling wave machine 14.3 million yuan punching equipment, some plants with simple small drilling machine, many pieces of corrugated board drilling together, two 35 rocker drill 10,000 yuan more; some manufacturers with punching equipment, many holes together, punching the need for a 500 tons of hydraulic press with a set of punching die 30,000 yuan.

Four, corrugated steel structure integrated pipe corridor advantages and disadvantages:

One, the construction period short corrugated steel pipe corridor for the whole corrugated steel pipe (pipe diameter < 3m) or assembled corrugated steel plate, its material in the factory processing production, on-site assembling, construction speed, compared to traditional concrete structure cast-in-place pipe corridor construction cycle can save more than 30%.

Second, the price advantage corrugated steel structure for steel thin shell, Corrugated Steel its simple structure, low engineering cost. Take 4x3.5m reinforced Concrete Pipe corridor For example, the cost of its civil construction is about 80 million yuan per kilometer, and the use of φ4.5m corrugated steel pipe replacement, its civil construction cost of about $MODELTYPE million per kilometer, its function can meet the demand. It has obvious advantage over traditional concrete structure in cost.

Third, the adaptable reinforced concrete structure in the foundation produces uneven settlement deformation, easy to produce cracks and other diseases, and corrugated steel structure has the ability to adapt to the Foundation and foundation deformation, avoid the problem of structural damage caused by uneven settlement of foundation.

Four, standard environmental protection: corrugated steel structure using factory standardized design, production, simple structure, quality control. Corrugated steel structure reduces the amount of natural materials such as cement, gravel, sand and so on, protecting environment and low carbon environment.


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