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Corrugated Steel Pipe

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Corrugated Steel Pipe

What is Corrugated Steel Pipe?

As a KS product manufactured in accordance with the Korean industrial standard KS D 3590 corrugated steel pipe and corrugated section, it is a civil engineering material manufactured in the form of a round pipe by forming corrugations with certain specifications on hot-dip galvanized steel plate to increase the external pressure strength and load-bearing capacity. It is used to support the load through interaction with the adjacent ground and collect rainwater and drain naturally in case of rain.

Product Figure
Specification - 0RS · 1RS · 3RS
Specification Pitch(p) Depth(h)
0RS 38.0mm 6.5mm
1RS 68.0mm 13.0mm
3RS 76.2mm 25.4mm
Manufacturing process
  • Corrugation molding
  • Pipe making
  • Cutting
  • Re-corrugation
Pipe making method using lock seam
  • Corrugated steel pipe is a product produced by adhering the shape of the lock seam with high pressure without welding the overlapping part when making a pipe in the form of a round pipe.
  • There is no welding part, so there is no damage or corrosion of the galvanized layer due to heat, so it is a product with high durability.
Manufacturing Specification
Specification Nominal pipe size Thickness of steel plate
0RS 150~600 1.6
1RS 300~1800 1.6, 2.0, 2.7, 3.2
3RS 900~3000 1.6, 2.0, 2.7, 3.2
Cross-sectional shape
Type of product

Mechanical properties

Corrugated steel pipe is a ductile pipe. When vertical earth pressure is generated on the upper part after burial, the lateral earth pressure resists. At this time, the vertical and lateral earth pressure become constant, referred to as load distribution.
This load distribution (ring compression effect) suppresses the bending development and has a structural characteristic in which the compressive force acts.

Excavation

Excavation is carried out based on the excavation regulations stated in the standard specification of Korea Expressway Corporation. The width of the excavation is as follows.

Nominal pipe size 300 400 450 500 600 700 800 900 1,000 1,200 1,350 1,500 1,800 2,000 2,200 2,400
The width of the excavation(b) 700 900 1,000 1,100 1,200 1,400 1,600 1,700 1,800 2,100 2,300 2,500
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Foundation ground

In order to evenly distribute the load acting on the corrugated steel pipe, the following conditions of foundation ground are observed.

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Type of foundation ground Minimum thickness of foundation Width of foundation
900mm or less 900 ~ 2,000mm 2,000mm or more
Normal ground 200mm 300mm 0.2D D
Rock ground 200mm
However, if the fill height exceeds 5 meters, increase by 40mm per 1 meter.		 D
Soft ground 500mm 0.4D or 500mm, whichever is greater 0.3D
(up to 1 meter)		 2D ~ 3D
Fill

For the minimum height of fill after the pipe construction, 300 mm or more or D/5 from the bottom of the pavement, whichever is greater, is applied.