List of Civil Engineering Materials products

You can install scaffolding on the float! Enjoy the water space freely! Information on floating dock rentals.

• Bridge Materials

Just by "applying" it to metals, glass, concrete, etc., you can achieve high durability waterproofing and repairs! It can be painted over.

• Waterproof tape, adhesive, drain, protective panel

Products subject to the Electrical Appliance and Material Safety Law

• Wiring devices
• Piping and electrical wiring materials
• Water and sewerage pipe fittings

Supports connection (butt joint) for Optomall 0 to 2!

• Wiring devices
• Water and sewerage pipe fittings

Ideal for protecting indoor fiber optic wiring.

• Wiring devices
• Water and sewerage pipe fittings

Ideal for protecting indoor fiber optic wiring.

• Wiring devices
• Water and sewerage pipe fittings

It is used for cable extraction from embedded boxes, etc.

• Wiring devices
• Water and sewerage pipe fittings

Can be cut and used to match the size of the corresponding flexible joint!

• Wiring devices
• Water and sewerage pipe fittings

Used for cable pulling from the ceiling! Comes with knockouts suitable for size 0 to 4 conduits.

• Other opening accessories (airtight materials around doors and windows, etc.)
• Wiring devices
• Water and sewerage pipe fittings

Convenient adhesive tape included

• Wiring devices
• Water and sewerage pipe fittings

Wiring organization is possible due to the separator (partition) at the center of the core.

• Wiring devices
• Water and sewerage pipe fittings

Expressing the warmth of wood.

• Wiring devices
• Water and sewerage pipe fittings

Can be molded into free shapes! What can piezoelectric materials like piezo films be used for? Dr. Piezo will introduce some examples.

• Bridge Materials

Convenient, environmentally friendly, safe, high-durability rubber weights for signs.

• Signs, banners, lanterns, and curtains
• Road signs and road accessories
• Road construction

A rope play equipment that recreates the image of DNA with curved frames and a 3D play net, achieving a large play space in a small area.

• Playground equipment
• Sports related facilities
• Other park materials

It is a cutting machine that can cut long materials quickly, safely, and accurately. It is secured with an upper clamp device that also serves as a cover, allowing for safe operation.

• Piping materials (copper pipes, cast iron pipes)
• Heat exchanger
• Copper and bronze fittings

Introducing the AquaRex series of transport pipes for sewage, fire-fighting water, industrial water, and agricultural water!

• Piping materials (plastic pipes)
• Water and sewerage pipe fittings
• Piping and insulation

Nipple sockets can be easily connected because they can be selected to match the thread diameter of iron pipes and other materials.

• Piping materials (copper pipes, cast iron pipes)

Lightweight, quick, easy, and convenient flood prevention product compared to sandbags: Folding water barrier F-shield.

• Other office supplies
• Flood prevention facilities, fire tanks, and flood control ponds
• Entrance/Exterior Doors

Lightweight, quick, easy, and convenient flood prevention product compared to sandbags: Folding flood barrier F-shield.

• Other office supplies
• Flood prevention facilities, fire tanks, and flood control ponds
• Entrance/Exterior Doors

Effort-saving fertilization for mineral supplementation! It is effective in cultivating crops that can withstand abnormal weather conditions.

• Fertilizers and Pesticides

Packed with nutrients like calcium! Each component is bound together in the form of a complex salt, allowing for efficient effectiveness.

• Fertilizers and Pesticides

15kg package! Contributes to improving poor crop growth caused by soil alkalization.

• Soil improvement material

It promotes the reproduction and activity of soil microorganisms, contributing to the health of the soil microbial community.

• Fertilizers and Pesticides

Prevents scattering of fine particles, excellent workability! Promotes healthy growth of crops and helps improve quality and yield.

• Fertilizers and Pesticides

Introducing granulated fertilizer made by uniquely decomposing carefully selected animal-based organic materials and plant-based organic materials.

• Fertilizers and Pesticides

Quick work with lightweight sandbags! Lightweight sandbags for road surface elevation.

• Reinforced earth wall

We offer proposals from design to estimation, production, and installation! Introducing case studies of contamination prevention membranes.

• Port supplies

We will assist you with rainwater runoff control measures through the creation of drawings for rainwater retention and infiltration facilities, rainwater calculations, and document preparation!

• Sewerage facilities
• Rainwater infiltration facilities
• Rainwater tank

Early strength type (Q) is a rapid hardening type that exhibits early strength! Introducing a binder that does not require mixing or pumping machinery.

• Tunnel Materials

Water quality purification through the action of microorganisms.

• Various blocks

This is a soil stabilization frame made of high-density polyethylene in a honeycomb shape. The main body can be expanded and filled with soil or crushed stone, making it usable for slopes, roadbeds, a...

• Slope protection material

Self-supporting design utilizing water pressure. It can be installed at the entrances of various buildings such as offices, buildings, and commercial facilities.

• Water stop

Recycled materials are increasingly being used in civil engineering, greening, agriculture, and water purification, among other applications.

• Soil improvement material

At Rontai, we handle three types of domestically produced seeds: Japanese pampas grass, power grass, and mugwort!

• Slope protection material

Just cover it and you're good to go! An insulation jacket cover that prevents heat loss and achieves energy savings and cost reduction.

• Water and sewerage pipe fittings

Pioneer of micronutrient fertilizers! Constantly supplying six essential nutrients necessary for the healthy growth of fruit trees and vegetables throughout the growing period!

• Gardening supplies
• Fertilizers and Pesticides
• Soil improvement material

High quality! Eco-friendly products with a variety of colors created from incinerated waste ash.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

It is a tape-like weed control material that prevents weeds from growing in the gaps between pavement and structures such as curbs.

• Paving Materials
• Gardening supplies

We continue to maintain the beautiful scenery of golf courses in various regions.

• Soil improvement material
• Other park materials

Soil changes with high water retention and permeability. Sand where grass and vegetables grow.

• Soil improvement material
• Other park materials

Land improvement, road earthworks, residential disaster prevention, and compliance with large blocks. RC can accommodate various shapes such as reverse T-shaped side ditches. Unreinforced can support ...

• Concrete Retaining Wall
• Surveying Consulting
• stone

Introducing a table of shipping lists for items such as "Metal Shut K" and "Oil Shut OS"!

• Soil improvement material

Introducing our water-swelling rubber series, including seal materials and packing materials for segments!

• Waterproofing Agent

Line up PA type corners and FA type, etc.! Prevents water leakage and enhances water tightness.

• Watergate

A ramp to facilitate the smooth access of special vehicles to construction sites and similar locations.

• Gutters and U-shaped gutters

Introducing case studies of permeable and water-retaining pavement material "Color Sand"! <Kawaguchi City Green Center (Saitama Prefecture)> *Constructed in 2022

• Exterior and paving materials <General>
• Paving Materials