List of Road, bridge and tunnel materials products
- classification：Road, bridge and tunnel materials
721～765 item / All 3254 items
100% recycled gypsum derived from waste gypsum boards is reused as raw material, achieving effective carbon neutrality during manufacturing!
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- Gypsum board and moldings
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Since the construction-generated soil will be recycled on-site, the disposal costs for leftover soil and the costs for new purchases will be significantly reduced. 【Disaster Prevention】
- Special Construction Method
The Noto Reconstruction Office of the Ministry of Land, Infrastructure, Transport and Tourism has featured our 3D printer in the Nikkei newspaper.
The official X account of the Noto Reconstruction Office of the Ministry of Land, Infrastructure, Transport and Tourism and the Nihon Keizai Shimbun have published that our 3D printer has been adopted for the reconstruction of Noto. The official X account of the Noto Reconstruction Office introduces the use of our products in the restoration work of the Noto Expressway. Additionally, the Nihon Keizai Shimbun mentions that structures made with our products are being used for the restoration of roads damaged by the Noto Peninsula earthquake, and that the construction period can be shortened by about two weeks, so please take a look.
We have prepared various channel widths for U-shaped gutters: U120, U150, U180, U240, U300, U360, U400, U450, U500, U600.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
A new type of grating that matches urban landscapes: "Safety Walker L·D."
- Grating
We have renewed our homepage. A variety of the latest grating products are now featured. (Okagrate Co., Ltd.)
We have renewed our homepage. A variety of the latest grating products are now featured. Awarded the Good Design Award, the new type of grating "Safety Walker" High-strength OG Super High-Tensile Grating made of stainless steel using a new manufacturing method "Fine Grate" Easy-to-fix grating for U-shaped ditches and striped steel plate covers "OG Lock Series" Barrier-free grating "Neo Slit" Pursuing slip resistance, safety, and design "Premium Expand" Wooden grating made from recycled thinning materials "Eco Wood Grating" Environmentally friendly grating using recycled plastic chips "Eco Pla Grating" And many more are featured.
We have prepared various widths for U-shaped gutters: U120, U150, U180, U240, U300, U360, U400, U450, U500, U600.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
Premium Lock Nut for M16 to Prevent Grating Theft! Prevents grating theft. A powerful tool that won't let them take it to scrap anymore!
- Grating
The "Safety Walker" installed at a sake brewery famous for being a pilgrimage site for anime. The top surface is flat, making it easy to pass through with a cart, resistant to clogging, and durable.
- Grating
Colorful ceramic materials filled into stainless steel grating! Forming beautiful lines along the drainage ditch.
- Grating
Lightweight due to the pipe structure! Always utilized for maintaining and managing beautiful and safe waterways.
- Gutters and U-shaped gutters
We have renewed our homepage. A variety of the latest grating products are now featured. (Okagrate Co., Ltd.)
We have renewed our homepage. A variety of the latest grating products are now featured. Awarded the Good Design Award, the new type of grating "Safety Walker" High-strength OG Super High-Tensile Grating made of stainless steel using a new manufacturing method "Fine Grate" Easy-to-fix grating for U-shaped ditches and striped steel plate covers "OG Lock Series" Barrier-free grating "Neo Slit" Pursuing slip resistance, safety, and design "Premium Expand" Wooden grating made from recycled thinning materials "Eco Wood Grating" Environmentally friendly grating using recycled plastic chips "Eco Pla Grating" And many more are featured.
Not just the removal of grating! Maintenance tools equipped with various added values.
- Grating
Fixing U-shaped gutter grating! Effective for theft prevention and reducing rattling noise.
- Grating
Tunnel audit road installation work, etc., laser processing of corrugated steel plates, and hot-dip galvanizing finishing! Please let us know your requests for "products like this that you want us to ...
- Tunnel Materials
The "Safety Walker" installed at a sake brewery famous for being a pilgrimage site for anime features a flat top surface, making it easy to pass with a cart, resistant to clogging, and durable.
- Grating
No need to attach fixtures to concrete secondary products. The grating for U-shaped gutters is securely fixed! Effective for theft prevention and reducing rattling noise.
- Gutters and U-shaped gutters
Bolt-fixed type. For cross drainage ditches. Also for longitudinal use and theft prevention. Additionally, for various concrete secondary products with bolt-fixed grating, etc.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
Bolt-fixed type for onsite cast-in drainage sumps. Additionally, bolt-fixed type sump covers, special dimension sump lids, and various types of sumps are also available.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
For use with on-site poured catch basins. Additionally, for bolt-fixed manhole covers, manhole covers and sumps with special dimensions, and various types of basins.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
Bolt-fixed type. For cross drainage ditches. Also for longitudinal use and theft prevention. Additionally, suitable for various concrete secondary products with bolt-fixed grating, etc.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
For JIS side ditches. Also for various VS (free slope) types, prefectural types, Ministry of Land, Infrastructure, Transport and Tourism types, and former Ministry of Construction types, etc.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
For JIS side ditches. Also for various VS (free slope) types, prefectural types, Ministry of Land, Infrastructure, Transport and Tourism types, and former Ministry of Construction types, etc.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products are included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High-Tensile High-Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Wobble prevention, tires of road bikes and sports-type bicycles won't fit, and wheels of carts, carry cases, and hand trucks won't get stuck, among other issues. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
For use with on-site poured catch basins. Additionally, for drop-in type manhole covers, manhole covers with special dimensions, sumps, and various types of basins.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
For use with on-site poured catch basins. Additionally, for drop-in type manhole covers, special dimension manhole covers and sumps, and various types of basins.
- Grating
The new "2024-2025 Comprehensive Catalog" has been released! New grating products included!
The new "2024-2025 Comprehensive Catalog" from Okagreat Co., Ltd. has been released! It features many original products and grating, including "Safety Walker" and "OG Lock U"! New types of grating such as "Safety Walker," "OG Lock U," "Premium Expand," and "Neo Slit" OG Super High Tensile High Strength Stainless Steel Grating "Fine Grate" are included. Many original products and gratings are featured! If you're looking for something a bit different from conventional grating, something you've never seen before, or grating that better matches the landscape, you might find it in this catalog. High heels and canes won't get stuck. Trash and small stones won't clog. Slip-resistant effects are expected. Theft prevention. Prevents wobbling, and tires from road bikes or sports-type bicycles won't fit, nor will the wheels of carts, carry cases, or hand trucks, and so on. This catalog addresses your grating concerns. If you would like a copy of the new "2024-2025 Comprehensive Catalog," please feel free to contact us.
Introducing photos of construction examples! Chemical composition and usage precautions are also included as stainless steel materials.
- Grating
We have a wide variety of sizes and types available! A total of 7 types in our lineup.
- Grating
Not only the features, but also details such as the size of the slit lid will be introduced with enlarged photos!
- Gutters and U-shaped gutters
This is a new grating that uses domestically sourced thinned wood, small-diameter wood, and plastic waste for the main materials, matching the surrounding nature unlike steel grating.
- Grating
Form a drainage channel along the curb! Grating with a gutter-shaped frame! Easy and simple installation!
- Grating
It is a building material that is gentle on people, safe, and excels in design.
- Grating
"Rainbow Grating" with selectable colors for the filler.
- Grating
"Rainbow Grating" with selectable colors for the filler.
- Grating
The grating is galvanized, and the frame is painted black! There are a total of 5 types of drain holes.
- Grating
"Rainbow Grating" with customizable filler colors.
- Grating
"Rainbow Grating" with selectable colors for the filler.
- Grating
A new form of grating for flood control measures. Improved rainwater absorption performance with a slider plate!
- Grating
Non-slip. Non-fall. Non-jam. A refined design with high drainage performance and barrier-free grating.
- Grating
Non-slip. Non-falling. Non-jamming. A sophisticated design with high drainage capability and barrier-free grating.
- Grating
We have renewed our homepage. A variety of the latest grating products are now featured. (Okagrate Co., Ltd.)
We have renewed our homepage. A variety of the latest grating products are now featured. Awarded the Good Design Award, the new type of grating "Safety Walker" High-strength OG Super High-Tensile Grating made of stainless steel using a new manufacturing method "Fine Grate" Easy-to-fix grating for U-shaped ditches and striped steel plate covers "OG Lock Series" Barrier-free grating "Neo Slit" Pursuing slip resistance, safety, and design "Premium Expand" Wooden grating made from recycled thinning materials "Eco Wood Grating" Environmentally friendly grating using recycled plastic chips "Eco Pla Grating" And many more are featured.
Non-slip. Non-fall. Non-trapping. A refined design with high drainage capability and barrier-free grating.
- Grating
We have renewed our homepage. A variety of the latest grating products are now featured. (Okagrate Co., Ltd.)
We have renewed our homepage. A variety of the latest grating products are now featured. Awarded the Good Design Award, the new type of grating "Safety Walker" High-strength OG Super High-Tensile Grating made of stainless steel using a new manufacturing method "Fine Grate" Easy-to-fix grating for U-shaped ditches and striped steel plate covers "OG Lock Series" Barrier-free grating "Neo Slit" Pursuing slip resistance, safety, and design "Premium Expand" Wooden grating made from recycled thinning materials "Eco Wood Grating" Environmentally friendly grating using recycled plastic chips "Eco Pla Grating" And many more are featured.
Non-slip. Non-fall. Non-trapping. A refined design with high drainage capability and barrier-free grating.
- Grating
Non-slip. Non-fall. Non-trap. Sophisticated design and high drainage capability, barrier-free grating.
- Grating
A new form of grating that designs the landscape.
- Grating
High-strength stainless steel grating! Available in strength and thinness (grating height) in plain type and non-slip type!
- Grating
We have been awarded the "Good Design Award" for the 2024 fiscal year. Featured in the 2024 new catalog is the "New Model SUS Grating 'Fine Grate'." Achieving high strength and high durability with a new manufacturing method!
The new model "Fine Grate" of stainless steel grating, featured in the 2024 catalog, has won the 2024 "Good Design Award." It demonstrates high durability performance against loads in the "twisting" direction! The OG Super High Tensile High Strength Stainless Steel Grating. Achieved through a manufacturing method different from conventional ones. We would like to introduce the new model "OG Super High Tensile High Strength Stainless Steel Grating" (U-shaped gutter type). The material used is NSSC low-alloy type duplex stainless steel, which boasts about twice the strength of SUS304 stainless steel. The manufacturing method of the OG Super High Tensile High Strength Stainless Steel Grating has been improved! It exhibits high durability performance against loads in the "twisting" direction! The new model combines the uneven parts of two components for bonding. This structurally enhances strength and achieves even higher load-bearing performance. It also exhibits high durability performance against "twisting" loads caused by "vehicle tires," which conventional products struggled with. The "R" shape of the flange allows rainwater to be quickly directed into the side gutter, enhancing drainage performance. Please feel free to consult us when placing an order. *For more details, please refer to the PDF document or feel free to contact us.*
High-strength stainless steel grating! Available in plain type and non-slip type with strength and thinness (grating height)!
- Grating
We have won the "Good Design Award" for the 2024 fiscal year. The new model SUS grating "Fine Grate." Achieving high strength and high durability with a new manufacturing method!
The new stainless steel grating model "Fine Grate" has won the 2024 Good Design Award. It demonstrates high durability against loads in the "twisting" direction! OG Super High Tensile High Strength Stainless Steel Grating. Achieved through a manufacturing method different from conventional ones. We would like to introduce the new model "OG Super High Tensile High Strength Stainless Steel Grating" (U-shaped drain type). The material used is NSSC low-alloy type duplex stainless steel, which boasts about twice the strength of SUS304 stainless steel. The manufacturing method of OG Super High Tensile High Strength Stainless Steel Grating has been improved! It exhibits high durability against loads in the "twisting" direction! The new model combines the uneven parts of two components and joins them together. This structurally enhances strength and achieves even higher load-bearing performance. It also demonstrates high durability against "twisting" loads caused by "vehicle tires," which was a weakness of conventional products. The "R" shape of the flange quickly directs rainwater into the side ditch, enhancing drainage performance. Please feel free to consult us when you need assistance. *For more details, please refer to the PDF document or feel free to contact us.
The strength is about twice that of SUS304! Developed with the duplex stainless steel "SUS821L1".
- Grating
We are pleased to present the 2024 edition of the 'New Catalog' featuring products that have won the 2024 Good Design Award. (New model SUS steel grating 'Fine Grate'. Achieving high strength and high durability with a new manufacturing method!)
The new model stainless steel grating "Fine Grate" has been awarded the 2024 Good Design Award. If you would like to receive the 2024 edition of the "New Catalog" featuring this product, please feel free to apply by clearly stating "Catalog Request." (Please note that there is a limited quantity available. One catalog per application.) (The new model "OG Super High Tensile High Strength Stainless Steel Grating" is achieved through a different manufacturing method. It demonstrates high durability against loads in the "twisting" direction. The "Fine Grate" (U-shaped drainage type) uses NSSC low-alloy duplex stainless steel as the material (which boasts about twice the strength of SUS304 stainless steel). Additionally, the manufacturing method of the conventional OG Super High Tensile High Strength Stainless Steel Grating has been improved to exhibit high durability against loads in the "twisting" direction. By combining and joining the uneven parts of two components, structural strength has been enhanced, achieving even higher load-bearing performance. It shows high durability against "twisting" loads caused by "vehicle tires," which has been a weakness of conventional products, and the "arc" shape of the flange quickly directs rainwater into the side ditch, improving drainage performance.) *Please feel free to apply.
The strength is about twice that of SUS304! Developed with the duplex stainless steel "SUS821L1." Strength = reducing the thickness of the grating height h!
- Grating
We have won the "Good Design Award" for the 2024 fiscal year. The new model SUS grating "Fine Grate." Achieving high strength and high durability with a new manufacturing method!
The new stainless steel grating model "Fine Grate" has won the 2024 Good Design Award. It demonstrates high durability against loads in the "twisting" direction! OG Super High Tensile High Strength Stainless Steel Grating. Achieved through a manufacturing method different from conventional ones. We would like to introduce the new model "OG Super High Tensile High Strength Stainless Steel Grating" (U-shaped drain type). The material used is NSSC low-alloy type duplex stainless steel, which boasts about twice the strength of SUS304 stainless steel. The manufacturing method of OG Super High Tensile High Strength Stainless Steel Grating has been improved! It exhibits high durability against loads in the "twisting" direction! The new model combines the uneven parts of two components and joins them together. This structurally enhances strength and achieves even higher load-bearing performance. It also demonstrates high durability against "twisting" loads caused by "vehicle tires," which was a weakness of conventional products. The "R" shape of the flange quickly directs rainwater into the side ditch, enhancing drainage performance. Please feel free to consult us when you need assistance. *For more details, please refer to the PDF document or feel free to contact us.
The strength is about twice that of SUS304! Developed with mold duplex stainless steel "SUS821L1"! U150, U180, U240, U300, and others.
- Grating
Introducing grating connection fittings clips for theft prevention and to prevent lifting! Available in a variety of sizes!
- Grating
The standard stainless steel grating! SUS304. Flat bar type with main material pitches of 30, 22, 15, 13, and 11 millimeters. The minimum gap is 7 millimeters.
- Grating