Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.
1～30 item / All 37 items
Eliminate noise issues. Moreover, it's affordable.
Conventional roadside ditches have had significant issues with noise and chipping caused by the rattling of the covers during vehicle passage. The FX ditch solves this problem, being narrower even with the same water surface, which allows for an increase in sidewalk width. Additionally, its slim design can reduce excess leftover soil by 10%.
Economical precast L-shaped retaining walls for roads that allow you to choose the base plate length according to site conditions! Fence installation is also possible!
○ This is a precast L-shaped retaining wall that complies with the "Guidelines for Road Earthwork Retaining Walls." ○ In road construction sites, it is necessary to accommodate various soil types and different cross-sectional shapes. The Hyper Road L-shaped retaining wall can be safely used even in sites where other precast L-shaped retaining walls are not applicable by providing several lengths of the base slab. ○ The Hyper Road L-shaped retaining wall is a low-carbon concrete product made using blast furnace slag fine powder.
A retaining wall that resists soil pressure by orienting the base plate in the opposite direction of an L-shaped retaining wall, called a "reverse L-shaped retaining wall"!
This is an inverted L-shaped retaining wall, installed with the base plate oriented opposite to that of a standard L-shaped retaining wall. KGL | Inverted L-shaped retaining wall | H = 0.5 to 3.0m MCL | Large inverted L-shaped retaining wall | H = 3.1 to 5.0m Due to its inverted L shape, the width of the land and the amount of excavation required are minimized.
Large box culvert 'FA Box' with improved constructability and cost-effectiveness by combining slabs.
The FA box is a construction method that combines precast components divided into three parts with cast-in-place concrete to create a large cross-section box. - The product's structure consists of a combination of slabs, resulting in low manufacturing costs! - By using a separated structure (segmentation) for the top slab and side walls, it has become possible to standardly accommodate sites with slopes. - The connection is easily achieved by integrating with cast-in-place concrete using loop joints!
L-shaped retaining wall with fence foundation that can be easily installed.
■ This is an L-shaped retaining wall standardized in accordance with the "Guidelines for Road Earthworks - Retaining Walls," which allows for the installation of pedestrian and bicycle fences or barriers at the top of the wall. ■ A horizontal load of 0.4 kN/m is assumed for the protective fence. ■ There are two types available: one for sidewalk loads and one for roadway loads. ■ In addition to road retaining walls, it has various applications such as parking lots and outfield fences in baseball fields. ■ Post holes are provided at intervals of 1.0 m. ■ It is standardized from H800 to H3,500. This is an L-shaped retaining wall that allows for the installation of pedestrian and bicycle fences or barriers at the top of the wall.
Industry first! Vehicle protective fence foundation PCa L-shaped retaining wall that can be processed with slanted cuts.
■NETIS CB-100045-A (Publication Ended) ■This is a road L-shaped retaining wall that has been standardized in accordance with the "Guidelines for Road Earthworks - Retaining Wall Works" and "Installation Standards and Explanations for Protective Fences," integrating a foundation for vehicle protective fences. ■By integrating the L-shaped retaining wall with the foundation for vehicle protective fences, significant cost reduction and shortening of construction time are achieved, while maximizing the road width. ■It is possible to process the top edge with a slant cut, allowing installation without tilting the product even on a road longitudinal slope of about 15%. ■The standard product can accommodate a horizontal alignment with a minimum radius of approximately R=20m. ■Standardized heights range from H=1,000 to 4,000.
Super large box culvert with post-tensioned PC steel materials arranged in the top slab.
■NETIS CB-080002-A (Publication Ended) ■This is a box culvert with a PRC structure using PC steel materials for the top slab and side wall components. ■It is applicable for ultra-large cross-sections ranging from 10.0m to 13.0m in width. (Please consult us if it exceeds 13.0m) ■The top slab and side wall components are made of precast concrete, while the bottom slab component is constructed with cast-in-place concrete. ■To shorten construction time, it is also possible to precast the bottom slab component. ■The angle can be freely set up to 75°. (Please contact us for angles less than 75°) ■It is widely adopted as an alternative to small-scale bridges at many sites.
Precast box culverts made of prestressed concrete according to the recommended specifications of JISA 5373 by the National Box Culvert Association.
By placing PC steel materials on the top and bottom plates, the thickness of the members can be reduced, resulting in a lighter weight compared to RC box culverts. Standard sizes range from width 1.8m × height 1.2m to width 5.0m × height 2.5m.
A box culvert divided into a top slab component, side wall components, and a cast-in-place bottom slab component.
■ "Three-part large box culvert" is a box culvert that is divided into top slab components, side wall components, and cast-in-place bottom slab components. ■ After assembling the top slab and side wall components manufactured in the factory on-site, cast-in-place concrete is poured into the bottom slab section. ■ Among large box culverts, it is applicable to large cross-sections ranging from 5.5m to 10.0m in width, and the components manufactured in upper and lower parts are integrated using mechanical joints and other methods.
L-shaped retaining wall for roads
■It is also possible to accommodate products such as angled cutting and short cutting processing. ■There are two types available depending on soil conditions and other factors.
There are two types of L-shaped retaining walls for roads with different loading conditions.
■It is also possible to accommodate products such as angled cutting and short cutting processing. ■There are two types with different upper load conditions.
L-shaped retaining wall with fence foundation, compatible with top edge slant cutting type.
The "SL Retaining Wall - Multi SL-F" is an L-shaped retaining wall for road use with a protective fence foundation, designed to accommodate any longitudinal slope through sloped processing at the top of the wall (supports slopes up to 15%*1). By integrating the retaining wall and the protective fence foundation, we have significantly simplified the installation work for the protective fence and shortened the construction period. Since posts can be installed at the top of the retaining wall, the road width can be maximized. *Thanks to the specially shaped base plate, it can flexibly accommodate horizontal curves. Post holes are provided at 1-meter intervals, allowing for compatibility with protective fences and fences with post spacings of 2 meters and 3 meters. Under certain conditions, it can also accommodate slopes greater than 15%.
Segmented all-precast L-shaped retaining wall with a maximum wall height of 10.0m.
■ The "SL Retaining Wall - SL-J" is one of the largest segmented all-precast L-shaped retaining walls in history, with a maximum wall height of 10.0m. ■ It can be applied to wall heights ranging from 5.0m to 10.0m. ■ It allows for easy construction without the need for cast-in-place concrete, achieving a reduction in construction time and labor efficiency on site. ■ It is designed to withstand Level 2 seismic motion (Kh=0.24) and can accommodate top edge sloping (longitudinal gradient). ■ It is possible to install a fence (protective barrier for pedestrians and cyclists) at the top edge, and it can also accommodate a cast-in-place concrete type for the base slab. * Fence post mounting holes can be installed at the top edge as needed.
L-shaped retaining wall with the base direction used in reverse from the usual.
■ The "SL Retaining Wall / SL-R" is an effective reverse L-shaped retaining wall for situations where it is difficult to install a heel slab due to boundary lines of the retaining wall site or nearby structures. ■ Being a precast product, it significantly shortens construction time and realizes labor-saving and manpower-reducing on-site work. ■ The sloped processing at the top of the retaining wall not only accommodates longitudinal slopes (up to a 15% slope) but also ■ The special trapezoidal shape of the base slab allows for flexible adaptation to horizontal curves. ■ It is also possible to provide fence installation holes at the top of the retaining wall, making it adaptable to a wide range of site conditions. *1 Depending on conditions, it may also accommodate slopes exceeding 15%. *2 Fence hole adaptation is handled on an individual basis.
Shortening construction time and labor-saving! Differentiation of residential land becomes possible, allowing for the creation of uniquely characterized residential developments.
The "KL Wall Type 3" is an L-shaped retaining wall certified by the Minister of Land, Infrastructure, Transport and Tourism, which can be installed where fence installation is needed and where considerations for fall prevention are necessary. Since the front wall is vertical, it allows for effective use of land up to the property boundary. With a rational design, it has a simple structure that offers good workability and excellent cost-effectiveness. Additionally, we also offer lightweight type retaining walls such as "T-LL Wall" and "ALW II." 【Features】 ■ Effective use of residential land area ■ Economical cross-section design ■ Shortened construction period and labor-saving ■ L-shaped retaining wall as a landscape material ■ Consideration for safety *For more details, please refer to the PDF materials or feel free to contact us.
Can be used selectively according to the purpose! The internal joints can be omitted, making it excellent in terms of workability.
We would like to introduce our DCJ box culverts, "K type/T type." The "K type (flexible joint box culvert)" has flexibility in each product, ensuring sufficient water-tight performance. When ground conditions are good, it exhibits seismic performance due to the small amount of extraction and bending angle caused by seismic motion. The "T type (seismic-resistant joint box culvert)" addresses permanent deformation of liquefied ground due to lateral flow and permanent deformation of sloped ground in artificially modified areas by increasing the insertion length of the joint, satisfying the necessary extraction amount while ensuring sufficient water-tight performance. 【Features】 ■ Available in two types: "K type" and "T type," allowing for selection based on application ■ Capable of minimizing the extraction amount and bending angle occurring at each joint ■ Excellent followability, compressive recovery, and abrasion resistance ■ Maintains high water-tight performance (0.06MPa) even during extraction due to seismic motion or after bending *For more details, please refer to the PDF document or feel free to contact us.
This is a comprehensive catalog of L-shaped retaining walls in accordance with the Road Geotechnical - Retaining Wall Guidelines.
The "L-Type Retaining Wall Comprehensive Catalog" features various L-type retaining wall products, including the L-type retaining wall "Mill Wall," which complies with the Road Earthworks - Retaining Wall Guidelines. By mechanizing the construction of factory products, on-site work is significantly shortened, leading to improved construction efficiency and labor savings. There are many delivery records for public works, including those from the Ministry of Land, Infrastructure, Transport and Tourism, confirming their safety. 【Featured Products】 ○ Mill Wall ○ HI Mill Wall ○ TP Wall ○ Fence TP Wall ○ Inverted T-Type Retaining Wall For more details, please contact us or download the catalog.
Our original product, compliant with the Road Geotechnical - Culvert Construction Guidelines, achieves high quality at a low cost.
The "Box Culvert" is our original product that complies with the Road Earthworks - Culvert Construction Guidelines, achieving high quality at a low cost. The "Powerful Box Culvert" can accommodate various horizontal construction methods. Additionally, we offer a range of specifications, including the "Large Two-Part and Four-Part Box Culverts" that can handle widths up to 10m, as well as "Slim Type" and "Flume Culverts" for railway use and small diameters, making our box culverts suitable for a wide variety of sites. 【Features】 ■ Complies with Road Earthworks - Culvert Construction Guidelines ■ Achieves high quality at a low cost ■ Accommodates a wide variety of sites ■ Standard live load conforms to T-25 as per the "Road Earthworks - Culvert Construction Guidelines" ■ Vertical connections using PC steel materials enhance water-stopping effectiveness *For more details, please refer to the PDF materials or feel free to contact us.
Oblique angles, openings, and differential ribs! Standard installation type box culverts compatible with various irregular-shaped products.
This product is a standard installation type box culvert that conforms to safety, security, and high-quality standards such as the Road Earthworks Culvert Construction Guidelines. The standard method for connecting products is bolting, and the internal width (B) of the products is standardized from 0.3m to 1.0m. We can accommodate special conditions such as load conditions, usage conditions, and construction conditions. 【Features】 ■ Conforms to standards such as the Road Earthworks Culvert Construction Guidelines ■ Safe, secure, and high quality ■ Standardized internal width (B) of 0.3m to 1.0m ■ Accommodates special conditions (load conditions, usage conditions, construction conditions, etc.) ■ Supports various custom-shaped products (angles, openings, reinforcement bars, etc.) *For more details, please refer to the PDF materials or feel free to contact us.
Vertical connection type box culvert capable of accommodating special conditions and various irregular products.
This product is a vertical connection type box culvert that conforms to safety, security, and high-quality standards such as the Road Earthworks Culvert Construction Guidelines. For connecting products, connections using PC steel materials and seismic connections using high-elasticity resin (TB connections) are possible. The internal width (B) of the product is standardized from 0.6m to 5.0m, and it can accommodate various special-shaped products such as angled, opening, split, and differential reinforcement. 【Features】 ■ Complies with standards such as the Road Earthworks Culvert Construction Guidelines ■ Safe, secure, and high-quality ■ Connections using PC steel materials and seismic connections using high-elasticity resin are possible ■ Standardized internal width (B) from 0.6m to 5.0m ■ Accommodates special conditions and various special-shaped products *For more details, please refer to the PDF materials or feel free to contact us.
CSB offers types 1, 3, and 4 to accommodate your construction conditions!
By integrating the piping and concrete foundation through centrifugal forming, it is effective in reducing labor and shortening construction time at the construction site. It has obtained the construction technology review certification from the Public Works Research Institute (Construction Technology Review Certificate No. 0514).
The "Guard Cliff," which integrates a guardrail foundation with an L-shaped retaining wall, allows for significant reductions in construction time.
○ "NETIS Registration: QS-110007-A (Old Number)" Guardrail Foundation Integrated L-Type Retaining Wall "Guard Cliff" ○ By integrating the guardrail foundation and the L-type retaining wall, significant cost reduction and shortening of construction time have been made possible. ○ The guardrail foundation integrated L-type retaining wall "Guard Cliff" is a low-carbon concrete product made using blast furnace slag fine powder.
"Large box culvert" that can be assembled on-site with upper and lower pieces, capable of forming cross-sections of 3 meters or more!
○ This is a large box culvert that is manufactured and transported in split upper and lower pieces, which are then assembled on-site. ○ Compared to traditional on-site construction methods, there is less high-altitude work on scaffolding, allowing for safer and more secure construction. ○ The split-type "large box culvert" is a low-carbon concrete product made using blast furnace slag fine powder.
"Arch culvert" published in the Road Geotechnical Culvert Construction Guidelines.
○ It is an arch culvert with a very rational shape as a structure. ○ It can be used for various purposes such as sewage, drainage, underground rivers, underpasses, and utility tunnels. ○ It is a culvert that demonstrates advantages when the soil cover exceeds 3 meters. ○ Depending on the design conditions, it can also accommodate soil cover exceeding 10 meters. ○ It is a low-carbon concrete product made using fine powder from blast furnace slag.
It is the L-type retaining wall (residential construction product) The Wall 2 certified by the Minister of Land, Infrastructure, Transport and Tourism! Product height H = 1000~3000.
○ This is a retaining wall certified by the Minister of Land, Infrastructure, Transport and Tourism. (Residential construction product) Product height H=1000~3000 ○ It is safe even in the event of a large earthquake (intensity 6 to 7) and protects the foundation of buildings. ○ It complies with the design horizontal seismic coefficient Kh=0.25! It protects residential buildings even during major earthquakes. ○ The front is vertical, allowing for maximum effective use of land up to the property boundary line. ○ With a variety of corner products available, flexible development plans that match the shape of the site are possible within the range of 90°≦θ<180°.
We offer sizes ranging from 240mm to 10m, and we can propose earthquake resistance, functionality, and various construction methods according to your needs.
Our Calvert products are widely used in various projects such as urban sewers, agricultural drainage channels, underground passages, and culverts for road crossings, utilizing environmental creation technology that supports urban functions.
Our original box culvert
■It can be installed by dropping it from above. ■Standardized dimensions are from 0.3m wide × 0.3m high to 0.6m wide × 0.6m high. For specifications other than the above, please consult us.
A box culvert equipped with a special rubber ring at the joint section to provide seismic performance.
■There are two types, K-type and T-type, depending on the required performance. 【K-type】 It has water-tightness that can withstand a water pressure of 0.06 MPa under level 2 seismic motion in a non-liquefied, non-inclined ground condition. 【T-type】 It has water-tightness that can withstand a water pressure of 0.06 MPa under level 2 seismic motion. ■By absorbing ground displacement at each joint of the product, it is possible to reduce the stress generated in the structure and minimize the amount of pull-out and bending angle occurring at each joint. ■The special rubber ring has a two-layer structure, with soft rubber covered by hard rubber on the outside, providing excellent followability, compression recovery, and wear resistance. ■High water-tightness can be achieved with the special rubber ring alone, eliminating the need for internal joint work.
A box culvert divided into a top slab component and a bottom slab component.
■Among large box culverts, it is applicable to relatively small cross-sections ranging from 4.0m to 6.0m in width. ■The components manufactured in upper and lower sections are integrated using mechanical joints and other methods.
A box culvert divided into a top slab component, side wall components, and a bottom slab component, all constructed with precast elements.
■ It is applicable to large cross-sections ranging from 5.5m to 10.0m in width among large box culverts. ■ The components manufactured in sections are integrated using mechanical joints and other methods.
