Construction
Nippon Steel Group’s products and technologies support various steel structures in the fields of construction, such as roads, railroads, harbors, rivers, and buildings.
We are promoting the construction solution brand ProStruct® that combines Nippon Steel Group’s high-performance steel materials and highly sophisticated design/construction technologies. We will improve economic efficiency and productivity in the processes of design, processing, and construction by providing our evolving steel structure technology, and contribute to cocreating a sustainable society by resource saving and CO2 emissions suppression.


- 1Eco-friendly piling method :Low noise and low vibration,no waste soil,no ground pollution
- 2High reliability and quality:Large bearing capacity and pulling resistance capacity,thanks to the helical blade
- 3Highly applicable to severe construction conditions:Small area,nearby existing structure, requirement for small foundations

Foundations possibile to be used both for temporary cofferdams and for permanent foundations can reduce construction periods and costs.A group of steel pipe sheet piles moves together,which can provide high horizontal resistance and vertical bearing capacity,along with reducing the occupied area at the same time.Using the interlocks of high shear strength can further reduce the size of foundations.The foundation can also be ued for aseismic retrofitting of bridges.

Steel pipes with a design strength of 400 N/mm2 for building construction. Using this product enables rational and economic structural designs.

These are steel pipes having small and shallow depressions in the axis and circumference directions. Their cement-bonding properties have been significantly improved while their structural performance such as compression and bending properties is maintained. They can reduce costs and construction periods and can enhance the reliability of structures.

- 1The improved performance of the structure makes it possible to reduce the number of piles used.Further, using the prefabricated structural members,reduced structure occupancy width,and reduction in the soil improvement area, speedy and space-saving construction is possible.
- 2Applicable to construction in which quay walls are to be deepened or reinforced while facilities behind river revetments are left untouched,as well as to aseismic retrofitting of quay walls.

Hat-type sheet pile is 900mm in width.
- 1Superb drivability:The large sectional area of the Hat-Type sheet pile realizes superior drivability.
- 2High structural reliability:No reductioon is required in sectional properties to consider the possible lack of shear force transmission at the interlocks,which is true for U-type steel sheet piles.
- 3Excellent cost-effectiveness:The amount of steel per unit wall can be reduced,resulring in improved total cost.

- 1Availability of numerous sectional properties:Hat-type and H-shape combined high stiffness steel sheet piles come in combination of Hat-type sheet piles which have four types and H-shape sections which have many types.Eventually they provide more than 200 types of economical properties(Section modulus per meter of wall:Approx.2,320 to 19,970cm3/m)
- 2Ease of Installation:An ordinary vivratory hammer is directly applicable for driving.The Hat-type and H-shape combined high stiffness steel sheet pile,having higher moment of inertia per pile compared with Z-type and other type piles,is very easy to work with.

- 1High joint strength:This type of sheet pile boasts extremely high tensile strength at its interlocking sections,up to 5.88MN per linear meter of joint length,and is suited for use in celluar-type structures,such as quay walls,manmade island seawalls,cofferdams,and other similar projects.In addition,we can provide the longest product currently possible :a maximum of 38.0m.
- 2Large deviation angle:This sheet pile has large deviation angle at interlocks(the interlock swing),the maximum angles for the combination of the identical types of straight web-type sheet piles are respectively 10.0 and 12.5.

The BT-HT series is high-tensile steel for which the yield point does not decrease even for thick products. Most types are manufactured by applying the thermo mechanical control process (TMCP). The high-tensile steel with excellent weldability has been applied to various buildings.

Steel pipes for building construction approved by the Japanese minister. The SA-T series with a low yield ratio and the SA-TT series with a high yield point that are mainly used as elastic parts are available. NIPPON STEEL's seamless steel pipes are the world's top brand.

As the size of buildings increases (higher-rise and larger span), the strength and the cross section of steel materials for steel frames need to be increased. High HAZ toughness steel (HTUFF™) for building construction can be processed by large heat input welding that is required to increase the strength and the cross section. The steel can secure the performance at welds and can improve the welding efficiency at the same time.

H-shapes used for structural members such as columns and trusses subjected to a high compression force. NIPPON STEEL provides Jumbo Sections with flange thickness of up to 125mm.(Maximum size ; W14X16X730lbs)

UIT of Nippon Steel & Sumikin Technology Co., Ltd. is a system by which the fatigue strength of steel members is improved. The impact pin attached to the end is vibrated at high speed to apply impact to the weld area. It is effective for extension of the fatigue life at a weld toe and it contributes to reduction of the maintenance cost. We have a proven record exceeding 100 including the D runway of Haneda Airport.
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