We have renewed our homepage. A variety of the latest grating products are now featured. (Okagrate Co., Ltd.)

The fusion of grating and screen: "Screen Grating." Gentle on the Earth, keeping rivers and seas clean. Catching waste. Preventing waste from flowing downstream.

We would like to introduce the "Screen Grating" handled by Okagreat Co., Ltd. We have been hearing more about marine pollution caused by plastic waste. With the introduction of paid plastic bags and the shift to paper straws in various industries, efforts are being made to reduce plastic waste. This "Screen Grating" integrates grating and debris screens, which were traditionally installed separately, achieving significant cost savings. It is installed at the edge of the drainage channel to prevent debris from entering the interior, and when the screen is not in use, it can be easily stored in the grating body with a one-touch mechanism. Removing accumulated debris is also simple. It is suitable for U-shaped channels for concrete secondary products and for raised grating for longitudinal use, among others. (The photos show the "U-shaped channel type" and the "JIS drainage channel type.") Please feel free to consult us regarding U-180, U-240, U-300, and other special or custom dimensions, as well as those for concrete secondary products. If you have any inquiries, please do not hesitate to contact us.

• Agricultural civil engineering works

"FRP checker plates" are lightweight and strong, excellent in corrosion resistance and electrical insulation, with no worries about corrosion, and are used in various applications.

We would like to introduce the FRP series "FRP Checker Plate" handled by Okagreat Co., Ltd. The "FRP Checker Plate" is a plate made of FRP with a checkered steel plate pattern, featuring excellent properties such as lightweight, high strength, corrosion resistance, weather resistance, and insulation. It can be used for various applications, including flooring and wall materials. FRP stands for "Fiber Reinforced Plastic," which is plastic reinforced with glass fibers. Due to the characteristics of FRP, it is used as parts and materials in various fields such as shipping, automobiles, aviation, and construction. By forming FRP into a "checker plate" shape (a plate with a checkered steel pattern), it can be used for a wide range of applications. The plate thicknesses are 6.0 mm, 10.0 mm, 15.0 mm, and 20.0 mm (single plate type). Additionally, we can produce "composite plate types," which include types formed with polyurethane in a sandwich structure or types that incorporate honeycomb materials (total thickness ranges from 33 mm and above). *For more details, please refer to the PDF document or feel free to contact us.

• Other wall materials

Stainless steel "doormat" grating for use as a "doormat," in front of entrances, in front of elevators, etc.! Also suitable for "foot washing areas"!

We would like to introduce the "stainless steel grating for entrance mats" handled by Okagreat Co., Ltd. It features a main bar (main component) T-bar type, available in T-bar head widths of 6.0mm and 8.0mm. The height of the T-bar comes in two options: h15mm and h20mm. It can be used for various purposes such as "entrance mats," "foot washing areas," "in front of entrances," and "in front of elevators." We can accommodate various dimensions according to design drawings. Please feel free to consult with us.

• Elevator

"Floor grating for flooring and stair use." For flooring in plant construction work. Bar heights available are h19, h25, h32, h38, and h44.

We would like to introduce the steel grating products handled by Okagreat Co., Ltd., specifically the "Floor Grating" and "Stair Grating." (For use in plant and factory construction, power plants, waste treatment facilities, shipyards, and walkways on ships, listed on the Tokyo Stock Exchange Prime and First Section.) Floor grating and stair grating (Steyatrade, Steatrade, Steyattrade) are essential for flooring in chemical plants, facilities, oil, steel, refineries, shipyards, and factories. We offer various bar heights: h19, h25, h32, h38, and h44. Custom notching and toe plate installation can be done according to the drawings, and anti-slip nosing plates can also be installed for stair grating. For coastal salt damage prevention, in addition to the standard hot-dip galvanized finish, we can also provide an extra step with "SG Coating" (hot-dip galvanized aluminum alloy coating - Super Galva). Other treatments such as phosphating, Kenbo zinc, special painting, and thermal spraying are also available. *For more details, please refer to the PDF materials or feel free to contact us.

• Geothermal Power Generation

SUS304 stainless steel grating for kitchens in school cafeterias, food centers, food factories, workplaces, hospital food centers, dining halls, and processing plants!

A standard stainless steel grating! SUS304 stainless steel grating. Flat bar type with main material pitch of 30, 22, 15, 13, and 11 millimeters. The minimum gap is 7 millimeters. We have a wealth of delivery records for stainless steel (SUS304) grating used in kitchens, food service centers, and food factories (drain pits, line pits). We would like to introduce the "integrated type" of flat bar grating. The surface of the grating is available in three types: plain type, non-slip type, and knurled type. The pitch of the main material (main bar) is: P30 (gap 26 millimeters) P22 (gap 18 millimeters) P15 (gap 11 millimeters) P13 (gap 9 millimeters) P11 (gap 7 millimeters) We can accommodate various dimensions according to the design drawings. Please feel free to consult with us.

• Sanitary fixtures

A drainage channel formed along the curb! Finished with galvanized steel. The sliding mechanism enables a splash prevention structure! Grating with a gutter-type receiving frame!

We would like to introduce "Super Drain," handled by Okagreat Co., Ltd. It forms a drainage channel along the curb, draining water from above and infiltrated water from permeable asphalt. It features a slim and smart slit grating. The frame has a "T" shape that minimizes the accumulation of debris (D-type frame). It has a slide-locking mechanism to prevent it from popping up. Both the cover and frame are made of steel with a hot-dip galvanized finish. Please feel free to consult us when you need assistance. 【Features】 ■ Excellent water flow ■ Easy to clean ■ Superior safety *For more details, please refer to the PDF document or feel free to contact us.

• Other commercial buildings and service facilities

"Safety Walker" grating, installed at golf course companies affiliated with the Tokyo Stock Exchange Prime, featuring a flat top surface that is durable and resistant to clogging.

Okagreat Co., Ltd.'s "Safety Walker G・D" and "Safety Walker L・D" are "evolved grating" products that are less prone to clogging from small stones and debris compared to conventional grating, ensuring they remain hygienic at all times, have an attractive appearance, and are resistant to damage due to their surface material structure. They can be utilized in various scenarios. In addition to being used as grating for on-site pouring, they are also suitable for various types of drop-in and bolt-fixed grating, raised types, and other special-sized covers (please consult us for concrete secondary products, etc.). Due to their structural design, the surface material structure makes them strong against twisting and impacts from vehicle tires, making them difficult to break. They are also ideal for preventing grating damage. Furthermore, the design minimizes the accumulation of stones and debris on the grating itself, preserving the aesthetic appeal. Multiple slit holes are made in the "striped steel plate" or "patterned steel plate" on the surface to balance drainage and strength. It has also been reported that the slip resistance exceeds that of conventional types. You can easily notice the difference when passing through areas where grating frequently gets damaged, such as near entrances, especially when using golf carts. You will experience the difference compared to conventional grating.

• Gates, walls and fences

New model SUS-made OG super high-tensile high-strength fine grating! "Fine Grate"! Exhibits high durability performance even under loads in the "twisting" direction!

We would like to introduce the new model of OG Super High Tensile High Strength Stainless Steel Fine Grating, 'Fine Grate (Fine Pitch 15)' (U-shaped drain type), handled by Okagreat Co., Ltd. Awarded the 2024 Good Design Award. The manufacturing method of 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 and joins them together. This structurally enhances strength and achieves even higher load-bearing performance. It also demonstrates high durability performance 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, improving drainage performance. Some of you may have experienced stainless steel grating failing and becoming "disassembled" due to loads from "vehicle tires" and "twisting." This product addresses such issues through a new manufacturing method. *For more details, please refer to the PDF document or feel free to contact us. If you have any inquiries, please do not hesitate to consult with us.

• Inspection hatches, manhole covers, and ditch covers

Also for cable and wiring pits in solar power plants. No need for anchor installation, easy construction with a fixed attachment method. For theft prevention.

The "OG Lock Pit" is a product that does not require post-installed anchors for concrete products and features a fixing method that does not protrude from the surface of the lid. By simply tightening the OG lock bolts at two points, it can be securely fixed in close contact with the drainage channel. Unlike anchor installations, there are no bolts or nuts protruding from the surface of the lid, which does not obstruct pedestrian traffic. Additionally, it can also be used as a pit cover for cable and wiring in solar power plants, mega-solar installations, and solar farms. 【Features】 ■ No need for anchor installation ■ Securely fixed in close contact with the drainage channel by tightening the OG lock bolts at two points ■ Does not obstruct pedestrian traffic ■ Effective in preventing rattling noise *For more details, please refer to the PDF document or feel free to contact us.

• Biomass power generation facilities

Effective in preventing rattling noise from U-shaped drainage grates. Fixed securely to prevent theft. No need for mounting fixtures on concrete precast products. Easy to install.

We would like to introduce the OG Lock series 'OG Lock U' handled by Okagreat Co., Ltd. 'OG Lock U' is a product that allows for the secure attachment of U-shaped channel grating without the need for fixtures on concrete products. It can be securely fixed to the channel simply by tightening the OG Lock bolts in two places, without any construction required for the side ditch. Removal is also a simple task of just loosening the bolts, which does not hinder the cleaning of the side ditch. 【Features】 ■ Securely fixes to the side ditch by tightening the OG Lock bolts in two places ■ Easy removal by simply loosening the bolts ■ Effective for theft prevention of grating and reducing rattling noise *For more details, please refer to the PDF document or feel free to contact us.

• Power and Energy Equipment

Laser processing and hot-dip galvanizing finish for striped steel plates! For tunnel inspection road installation work, please let us know your requests for "products like this."

We would like to introduce the processed products of striped steel plates handled by Okagreat Co., Ltd. We can accommodate various processing and surface treatments, including laser processing machines, shearing, press bending, welding, hot-dip galvanizing finishing, and rust prevention painting. Our company continues to pursue convenience in the environments and locations where our products are used, striving to provide better proposals and products. We have delivered numerous products to sites such as the Ministry of Land, Infrastructure, Transport and Tourism, prefectures, prefectural civil engineering offices, cities, NEXCO, and water resources, as well as disaster recovery and agricultural and forestry-related sites. Please let us assist you in solving your problems. Additionally, we can process other steel materials (such as H-beams, C-shaped steel, and equal angle steel) and can also manufacture receiving frames and brackets for striped steel plate lids, as well as support frames. Please feel free to inquire about galvanizing certificates (such as HDZT-77), shipping certificates, mill sheets, and steel material certificates. 【Features】 ■ Various processing and surface treatments, including laser processing machines, shearing, press bending, welding, hot-dip galvanizing finishing, and rust prevention painting ■ Support for various treatments tailored to the construction environment *For more details, please refer to the PDF document or feel free to contact us. It would be helpful if you could provide drawings, etc.

• Tunnel construction

The "Safety Walker" installed on the premises of a famous leasing company in Okayama Prefecture to suppress falling debris such as fallen leaves. A grating that is less prone to clogging.

Okagreat Co., Ltd.'s "Safety Walker G・D" and "Safety Walker L・D" are designed to be less prone to clogging from small stones and debris compared to traditional grating. They also suppress the accumulation of fallen leaves and maintain hygiene, while offering an attractive appearance and a durable surface structure that resists damage, making them an "evolved grating." These gratings are suitable not only for on-site installations but also for various types of drop-in and bolt-fixed applications, raised types, and other special dimension covers (please consult us for concrete precast products, etc.). Due to their structural design, the surface is made of a material structure that is strong against twisting and impacts from vehicle tires, making the grating resistant to breakage. They are also ideal for preventing grating damage. Additionally, the design minimizes the likelihood of stones and debris clogging the grating itself, preserving the aesthetic appeal. The surface features multiple slit holes in the "striped steel plate" or "patterned steel plate," balancing drainage and strength. Furthermore, it has been reported that the slip resistance exceeds that of traditional models. You will notice the difference from conventional gratings in situations such as "leaves falling into the gutter making cleaning difficult" or "frequent breakage of the grating near entrances."

• Landscaping and planting

"Safety Walker," a flat-topped and durable grating installed at golf course companies in the Tokyo Stock Exchange Prime market. It is also resistant to clogging.

Okagreat Co., Ltd.'s "Safety Walker G·D" and "Safety Walker L·D" are "evolved grating" products that are less prone to clogging from small stones and debris compared to conventional grating, ensuring they remain hygienic at all times. They also have an attractive appearance and are less likely to break due to their surface material structure, making them useful in various scenarios. These products can be used not only as site-cast grating but also in various drop-in types, bolt-fixed types, raised types, and other special dimension covers (please consult us for concrete secondary products, etc.). Due to their structure, the surface is made of material that is strong against twisting and impact from vehicle tires, making the grating difficult to break. They are also ideal for preventing grating damage. Additionally, the structure makes it difficult for stones and debris to clog the grating itself, preserving the aesthetic appeal. Multiple slit holes are made in the "striped steel plate" or "patterned steel plate" on the surface to balance drainage and strength. It has also been reported that the slip resistance exceeds that of conventional types. You can clearly notice the difference when passing through areas where grating frequently breaks, such as near entrances, especially when using golf carts. You will experience the difference compared to conventional grating.

• Other earthworks, foundation works, and exterior floors

The "Safety Walker" installed on the premises of major companies in the Tokyo Stock Exchange Prime segment to suppress falling debris such as fallen leaves. A grating that is less likely to clog.

Okagreat Co., Ltd.'s "Safety Walker G·D" and "Safety Walker L·D" are "evolutionary grating" products that are less prone to clogging from small stones and debris compared to conventional grating, while also suppressing the accumulation of fallen leaves and other debris, keeping them hygienic at all times, looking good, and being resistant to damage due to their surface material structure. They can be used not only as site-cast grating but also for various types of drop-in and bolt-fixed grating, raised types, and other special dimension covers. (Please consult us for concrete precast products, etc.) Due to their structural design, the surface material structure makes them strong against twisting and impacts from vehicle tires, making them difficult to break. They are also ideal for preventing grating damage. Additionally, their design minimizes the likelihood of stones and debris clogging the grating itself, preserving the aesthetic appearance. Multiple slit holes are made in the surface material of "striped steel plates" or "patterned steel plates," balancing drainage capability and strength. Furthermore, it has been reported that the slip resistance exceeds that of conventional types. You can experience the differences from conventional grating, such as frequent damage near entrances or the difficulty of cleaning due to fallen leaves accumulating in the gutters.

• Harbor Construction

The "Safety Walker" installed in a sake brewery that is a famous pilgrimage site for anime. It is designed to be less prone to clogging, with a flat top surface that allows for easy passage with carts.

The "Safety Walker G・D" and "Safety Walker L・D" are an evolved type of grating that, compared to conventional grating, is less prone to clogging from small stones and debris, always maintaining hygiene, has an attractive appearance, and is less likely to break due to its surface material structure. They can be useful in various scenes. They are suitable not only as site-cast gratings but also for various types such as drop-in, bolt-fixed, raised types, and other special dimension covers (please consult us for concrete precast products, etc.). Due to their structure, the surface is made of material, making them strong against twisting and impacts from vehicle tires, making them difficult to break. They are also ideal for preventing grating damage. Additionally, because of their structure, the gratings themselves are less likely to get clogged with stones and debris, preserving the landscape. Multiple slit holes are made in the "striped steel plate" or "patterned steel plate" on the surface to balance drainage and strength. Furthermore, the "anti-slip effect" has been reported to exceed that of conventional types. If you have issues such as cart wheels getting caught and making it difficult to pass, or frequent grating damage near entrances, please consider these products. *For more details, please refer to the PDF materials or feel free to contact us.

• container

The "Safety Walker" installed on the premises of major companies in the Tokyo Stock Exchange Prime segment to suppress falling debris such as fallen leaves. A grating that is less prone to clogging.

Okagreat Co., Ltd.'s "Safety Walker G·D" and "Safety Walker L·D" are an evolved type of grating that is less prone to clogging from small stones and debris compared to conventional grating. They also suppress falling objects like leaves, maintaining hygiene at all times, have an attractive appearance, and are resistant to damage due to their surface material structure. These gratings are suitable not only for on-site casting but also for various types such as drop-in, bolt-fixed, raised types, and other special-sized covers (please consult us for concrete secondary products, etc.). Due to their structural design, the surface is made of a material structure that is strong against twisting and impacts from vehicle tires, making them difficult to break. They are also ideal for preventing grating damage. Furthermore, the design minimizes the accumulation of stones and debris on the grating itself, preserving the landscape. Multiple slit holes are made in the "striped steel plate" or "patterned steel plate" on the surface to balance drainage and strength. It has also been reported that the slip resistance exceeds that of conventional types. You can experience the differences from conventional grating, such as frequent damage near entrances or the difficulty of cleaning due to leaves falling into the gutters.

• lift

A grating called "Safety Walker," known for its flat top surface and durable panel structure, installed at a famous ramen shop as a measure against large vehicle entrance and exit.

The "Safety Walker G・D" and "Safety Walker L・D" are an evolved type of grating that, compared to conventional grating, is less prone to clogging from small stones and debris, always maintaining hygiene, has an attractive appearance, and is less likely to break due to its surface material structure, making it useful in various scenarios. In addition to being suitable as grating for on-site casting, it can also be used for various types of recessed and bolt-fixed grating, raised types, and other special dimension covers (please consult us for concrete precast products, etc.). Due to its structural design, the surface material structure makes it strong against twisting and impacts from vehicle tires, making it difficult for the grating to break. It is also ideal for preventing grating damage. Moreover, the design prevents stones and debris from clogging the grating itself, preserving the landscape. Multiple slit holes are made in the "striped steel plate" or "patterned steel plate" on the surface to balance drainage and strength. It has also been reported that its anti-slip effect surpasses that of conventional types. You will likely realize that the grating frequently breaks near entrances is different from conventional types. *For more details, please refer to the PDF materials or feel free to contact us.*

• shopping cart

New model of stainless steel grating "Fine Grate" has arrived, demonstrating high durability against loads in the "twisting" direction! OG Super High Tensile Strength.

We would like to introduce the new model "OG Super High Tensile High Strength Stainless Steel Grating" handled by Okagreat Co., Ltd., specifically the "Fine Grate" (U-shaped drain type). This product has won the "2024 Good Design Award." It is made from 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 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 has been a challenge for conventional products. The "R" shape of the flange allows rainwater to be quickly directed 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.

• Harbor Construction

New model of SUS-made OG super high-tensile high-strength fine grating! "Fine Grate"! Exhibits high durability performance even under loads in the "twisting" direction!

We would like to introduce the new model of OG Super High Tensile High Strength Stainless Steel Fine Grating, 'Fine Grate (Fine Pitch 15)' (U-shaped drain type), handled by Okagreat Co., Ltd. Awarded the 2024 Good Design Award. We have improved the manufacturing method of OG Super High Tensile High Strength Stainless Steel Grating! It demonstrates 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 exhibits high durability 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 ditch, improving drainage performance. Some of you may have experienced stainless steel grating breaking apart due to loads from "twisting" caused by "vehicle tires." This product addresses such issues through a new manufacturing method. *For more details, please refer to the PDF document or feel free to contact us. If you have any inquiries, please do not hesitate to consult with us.

• Geothermal Power Generation

Are you making progress on measures for the "2024 Problem"? The management of drivers' working hours is becoming stricter, and in the logistics field, reducing "waiting time for loading" has become an urgent issue. To address this challenge, our company, Hotron, proposes the "Vehicle Detection Ultrasonic Sensor 'HM-UX2'," which instantly grasps the availability of loading bays. The 'HM-UX2' contributes to the resolution of waiting times by accurately understanding the availability status, reducing unnecessary waiting and queuing, and shortening waiting times, thereby alleviating the burden on drivers! By replacing the "eyes" of your loading bay management with this high-precision sensor, why not start taking measures against the "2024 Problem"? Take a look at the product features: "Can it accurately detect availability?" "Can we really use it in our company?" "I just want to know the cost, even if it's an estimate." If you have any questions or requests, please feel free to consult us first.

We sincerely apologize for the inconvenience, but we will be closed for summer vacation during the following period. Closure period: August 9 (Saturday) to August 17 (Sunday), 2025 Inquiries received during this period will be addressed sequentially starting from August 18 (Monday). We appreciate your understanding and cooperation.

Thank you very much for visiting our booth at the "High-Performance Materials Week [Osaka] 13th High-Performance Plastics Exhibition." Thanks to you, we had many visitors and were able to conclude the event successfully. In addition to the "PPLB-445" displayed on the day, we have a variety of products available. For those who were unable to measure samples at the venue, we offer a trial measurement service. Furthermore, for those who would like to know more about our products and services, we also accept online meetings. We welcome inquiries from those who attended as well as those who could not make it this time due to scheduling conflicts. Please feel free to contact us.

Aioi System is pleased to announce the release of the low-power wireless display "NW2991-JP," which achieves long battery life. This product supports 920MHz band wireless communication and can be operated in conjunction with wired displays. It can be easily integrated into existing systems by simply adding a master unit. With a high-speed response time of under one second and a variety of display functions for text and barcodes, it supports a wide range of applications. ▼ For more details, please see the press release linked below ▼ ■ Main Features - Maintenance-free design with a battery life of one year (low power consumption) - Compatible with mixed operation with wired displays - High-speed response (under one second) and diverse display formats - Stable communication in the 920MHz band ■ You can see the actual product at the exhibition This product will be displayed at the TOPPAN booth during the International Logistics Comprehensive Exhibition 2025, 4th INNOVATION EXPO. We invite you to visit the venue, see the actual product, and experience its performance. Dates: September 10 (Wed) - 12 (Fri), 2025 Venue: Tokyo Big Sight (Halls 4-8) Booth No: 5-907 (TOPPAN booth) Exhibition official website ▶ linked below We sincerely look forward to your visit.

Thank you very much for visiting our booth at the "Monozukuri World (Measurement, Inspection, and Sensor Exhibition) 2025." Thanks to you, we had many visitors, and the event concluded successfully. In addition to the "PPLB-445" showcased on the day, we have a variety of products available. For those who were unable to conduct sample measurements at the venue, we offer a trial measurement service. Furthermore, for those who would like to learn more about our products and services, we also accept online meetings. We welcome inquiries from those who attended, as well as those who were unable to come this time due to scheduling conflicts. Please feel free to reach out to us.