Protecting the world's infrastructure with rope access technology
Protecting the world's infrastructure with rope access technology
We are a group of
Rope Access
professionals protecting global infrastructure.
Nationwide service & emergency response available Performing high-altitude work safely, quickly, and accurately.
Keystone Co., Ltd. is a company specializing in rope access inspections with a proud 35-year accident-free record.
We safely and reliably inspect high-altitude infrastructure such as bridges, slopes, and dams using ‘3D rope access technology’ performed by skilled technicians.
We have over 4- full-time staff members and have established an operational system that can respond quickly to sites throughout Japan.
In addition to regular operations, we flexibly respond to sudden requests and urgent situations with tight deadlines. We answer to field’s call of “We need you here now!” with prompt response and reliable technical expertise.
Furthermore, we thoroughly implement preventive measures to minimize the dangers of working at heights, ensuring safety-first site management.
We at Keystone have an established reputation for technical excellence in bridge, slope, and high-place structure surveys and inspections. We handle inspections requiring special techniques and precision surveys of anchor equipment.
We ensure highly accurate inspection work by leveraging our extensive experience and specialized know-how cultivated through numerous project sites.
Adittionally, we ensure proper use of equipment during surveys to provide safe and high-quality work. Our reliable techniques and quality have earned high trust and evaluation from our clients.
Our strength lies in safe, fast and reliable “3D Rope Access Technology.
We have maintained zero serious accidents for 35 years since our founding and have recieved high evaluations for accident prevention and safety management.
For high-place infrastructure inspections and prevention work on bridges, dams, and slopes.We proved reliable operations utilizing safe rope access techniques and methods. Along with technical capabilities and responsiveness that avoid accident risks.
All of our staff are specialist technicians with advanced rope access skills. We have earned trust on many sites as a team of experienced professionals who can flexibly respond to any site.
Keystone has highly motivated staff.
Technicians with special qualifications thoroughly manage safety and execute dangerous high-place work safely and quickly.
Our excellent teamwork is also a major strength.
As a professional group that ahs undergone extensive training, we achieve consistent quality and smooth response.
We respond precisely to what our customers truly desire.
No matter how difficult the site, we propose optimal solutions with flexble thinking and reliable technology.
If you feel “It might be impossible”, please consult with us once.
We align with your budget and propose the optimal plan.
We’ll think together about ways to keep costs down without compromising quality.
Beyond mere construction, we aim for results you can be truly satisfied with. Your words, “I’m glad I chose you.” are our greates joy.
Keystone works efficiently and very quickly.
The atmosphere at the worksite is plesant. I appreciate the smiles amid the tension.
I was surprised to see female staff members with excellent rope access skills!
I've used other contractors before, but they took much longer. I'm satisfied with choosing Keystone.
We have received many other favorable comments as well.
Q: Are drones your competitors?
A: Drones are effective, but they are not suitable for inspections that require close visual examination or physical contact. We use rope access to reliably check blind spots and detail that are difficult to examine with drones.
Q: Are there other rope access companies?
Yes, there are, but caution is necessary. In recent years, the number of companies performing rope access has increased but we see cases where companies inexperienced in surveys and inspections, or those with immature rope techniques enter work sites. Many companies from different industries are entering this field, and some may have problems regarding technical capabilities and safety management, so it's necessary to carefully select who you hire.
Keystone Corporation has opened a Sapporo Office in front of Sapporo Station.
We have established our base in Sapporo, Hokkaido, with the aim of providing even more attentive service than before.
We look forward to your continued support.
Keystone Corporation Sapporo Office
Address:
1-6 Kita 4-jo Nishi 4-chome, Chuo-ku, Sapporo City, Hokkaido 060-0004
Phone: 011-804-8641
Contact:
Bridge inspection, structures… Yamaguchi, Hosugi
Slopes, rock walls, etc… Nakatani
We have launched a new specialized company, “Keysont Sukidachi Service Corporation” (abbreviated as KESS), focused on the needs of the construction consulting industry to handle survey and inspection services for general structures and infrastructures facilities that are not in specialized environments such as heights or slopes.
Keystone prides itself on high technical capabilities and reliability not only in rope access technology but also in infrastructures inspection in general. We have built a system that can respond to a wider range of site challenges by leveraging that experience and track record.
Would you like to make your daily report and ledger creation easier?
Our “computer & programming loving staff (lovingly called otaku) ” have developed original applications useful for field operations, availble for free!
✔ Dramatically reduces time for simple tasks.
✔ Tools that our staff actually use and are ‘impressed’ with.
✔ Available for immediate download just by registering
If you think ‘this is convenient!’ we welcome your support and good will. ✨
Please fill in the necessary information in the form below and make use of it!
Keystone Corporation is recruiting specialized staff for infrastructure inspections and structural surveys utilizing rope access technology
In particular, we offer preferential treatment to those with practical experience in the construction consulting industry or qualified individuals. We are also actively recruiting new graduates and second career individuals with backgrounds in geology, disaster prevention, civil enginerring, and structural engineering.
We have an independence support system through our “franchise system” in Sapporo, Sendai, Naha, and other locations, supporting future career advancement and regional expansion.
Would you like to contribute your abilites ot socially meaningful work supporting infrastructure using rope access?
Keystone Corporations’s professional team of world-class rope access technology [SORAT] qualification holders enables work in high and difficult places without using scaffolding or heavy machinery.
We protect everyone’s lives and livelihoods through road disaster prevention inspections and infrastructures inspections.
Utilizing rope access for bridge inspections. Quickly performing work without scaffolding.Rope access techniques originally applied mountain climbing and rescue techniques and has a history of being utilized in Western countries since the 1970s.
In recent years, it has become an essential method for structures where scaffolding installation is difficult, or in sites with strict cost and time constraints.
Our proprietary 3D rope access technique [SORAT] enables not just vertical movement but free directional movement including forward, backward, left, right, and diagonal, efficiently and achieving various high-place work such as bridge inspections, slope surveys, and visual contact inspections of rock walls.
✅ Safety-first “2-point security principle”
✅ Optimal operational technique for bridges, slopes, dams, and exterior wall inspections.
✅ Reliable access through precise control of descent and ascent.
✅ Securing anchor points with proprietary anchor systems.
✅ Using UIAA and EN standard equipment for high-strength, light weight design.
Our rope access technique thoroughly implements safety measures based on the revised Labor Safety and Health Law (Industrial Safety and Health Act) and boasts a 35-years accident-free record since our founding.
🔹 “2-point security” principle: Ensuring safety with a minimum of two anchor points.
🔹 “Temporary load test”: Confirming anchor point strength for safe descent.
🔹 “Operation check”: Inspecting proper functioning of descenders and ascenders.
🔹 “Rope check”: Preventing deterioration through thorough inspection before and after work.
We also conduct regular training and emergency response drills to constantly improve our level of safety assurance.
Our technique has numerous achievements in infrastructure maintenance, including bridge inspections.
We develop proprietary techniques adapted to site characteristics, suc as bridge inpsections using beam sliders, high-place movement with V-rig systems, and horizontal movement using Tyrolean bridges.
Furthermore, for exterior wall surveys and building inspections, we adopt optimal inspection methods combining anchor technology with descent thenology to achieve safe and higly precise operations.
We provide a wide range of services including rock wall and falling rock surveys, slope surveys, bridge inspections, and repair work.
Following the accident at the Sasago Tunnel on the Chuo Expressway in 2012, close visual inspection of infrastructure structures became mandatory.
Various methods such as temporary scaffolding, work vehicles, and drones are used for structural inspections, but rope access technique has been adopted at many sites as a method that can work in areas that are difficlult to approach by other means. Among these, our company Keystones’s rope access technique [SORAT] achieves “safe, quick, and reliable” construction and responds to diverse work sites.
Our rope access technique allows for safe and accurate surveys and inspctions of vertical walls and steep slopes where people cannot normal enter. We speedily collect data necessary for falling rock risk assessment and repair planning without requiring scaffolding.
We effortlessly solve difficult problems in high and hard-to-reach places
The secret to our speed is our self-developed rope access technique [SORAT]. By enabling not only vertical movement but also horizontal movement in all directions while ensuring strict safely standards, we achieve overwhelming speed and high operational efficiency.
The secret to our skill is our investigation and inspection techniques based on our many years of abundant know-how, and our techniques for producing high-quality deliverables. We have received very high praise from our customers.
We offer excellent cost-performance and have maintained an accident-free record for 35 years since our founding
the Preferred Choice for Rope Access Inspections
Keystone Corporation can safely, quickly and reliably access high and difficult locations that other companies find challenging by utilizing our self-developed cutting-edge “3D Rope Access Technique [SORAT]”
By performing work without scaffolding or aerial work platforms, we achieve siginificant cost reduction and improved work speed, earning high evaluation in terms of both time efficiency and cost-performance.
We have maintained an accident-free record for 35 years since our founding. Based on safety management philosophy learned from general contractors, we have built an education system that thoroughly ensures safely.
We provide intensive training on advanced safety techniques such as the “2-pont secure method” to all staff, and everyone undergoes annual qualification renewal and rescue training.
We select staff with high safety awareness and implement precise safety management for each work site.
Rope access technique alone cannnot perform survey inspections. We conduct high-definition inspections and surveys with advanced technical skills in various types of investigations. We are also thoroughly committed to the apperance and clarity of our deliverables, creating them with the awareness that personnel can use them as they are. Inspection data can be widely accommodated according to your requirements, including organization of field notes and photos., dagame diagram cration using CAD, and written reports. We constantly pursue quality that satisfies our customers.
We are committed to “the best work tailored to the customer’s budget” and never turn down projects with tight budgets. Leveraging our extensive experience, we provide optimal proposals that combine cost reduction with highly efficient operations.
With the attitude that “tighter budgets are opportunities to demonstrate our ingenuity” we deliver results that greatly satisfy our customers.
Our greatest strength
is having a team of
highly capable and motivated staff.
Our company employs technicians with advanced qualifications who utilize safety equipment and the latest construction methods for on-site work.
We offer industry-leading safety performance and excellent cost-effectiveness through swift operations. Our reliable technique is our strength
Cutting-Edge Rope Access Technique in the Industry! !
Keystone's
Strengths
Our Specifications
Our company is a group of skilled technicians who master our self-developed “3D Rope Access Technique [SORAT].”
We specialize in close visual inspections and contact observations in high and difficult places, and can safely and quickly reach locations that other companies cannot access.
We also create an environment that emphasizes technical improvement, with fully-equipped large-scale training facilities and a training center. We put effort into developing technicians from both Japan and overseas.
Our 35 year accident-free record since founding is our pride.
Base on SORAT’s safety techniques, represented by the”2-point secure method” all staff practice thorough safety management. We mandate qualification renewals and rescue training, and implement optimal safety management for each site. All staff share a “safety first” attitude and always work with a perfect system in place.
Our company representative specialized in geology, and our roots are in rock wall investigations. We excel at rock wall surveys, rockfall surveys, landslide investigations, and slope surveys that leverage geological knowledge. This is a major charateristic not found in other companies
We uphold a “customer-centered philosophy”, aiming to provide work that accurately understand what customers truly need.
We thoroughly implement our three major policies+ “never turning down work”, “adapting to your budget”, and “providing excitement, inspiration, and satisfaction”, tackling every project with full effort. We make potimal proposals for customers and build trust and achievements with the attitude of “not refusing work because it’s inexpensive”.
While based in Kyoto, we can respond with nimble operations throughout Japan. We have established an internal system where technology and information are smoothly shared, always delivering the highest performance.
Keystone Corporation combines technical expertise, safety capabilities, and customer satisfaction to deliver peace of mind and trust to everyone as a leading company in rope access technique, not only in Japan but world wide.
Keystone Co., Ltd. Office
社名
株式会社きぃすとん
代表取締役
中谷 登代治(なかたにとよはる)
設立
平成3年
(1991年)
所在地
〒617-0856
京都府長岡京市金ヶ原寿先6-1
TEL
075-959-9095
FAX
075-959-9096
メールアドレス
keystone@rope-access.co.jp
きぃすとん五條
大型訓練塔、研修・宿泊施設
〒637-0004
奈良県五條市今井4-2-57
九州支店
〒812-0011
福岡県福岡市
博多区博多駅前3-27-25
TEL 092-686-8022
東京オフィス
〒100-6213
東京都千代田区丸の内1-11-1
PCP丸の内
TEL 03-6775-3643
札幌オフィス
〒060-0004
北海道札幌市中央区北4条西4丁目1-7
TEL 011-804-8641
建設業許可
京都府知事 （特-6）第44402号
土木・とび・土工舗装・塗装・鋼構造物・しゅんせつ水道施設・石工事業
より詳しい会社情報はこちらからご覧ください。
We regularly update useful information such as examples of safe and quick rope access construction and site conditions.
Please take a look.
Open year-round, 24-hour reception
Rope Access Survey Specialists
Keystone Corporation
6-1 Kotobukisaki, Kanagahara Nagaokakyo City, Kyoto Prefecture 617-0856
