JIS G 4051

Material Grade

  S25C

Mill Certificate

  mill certificate
  heat treatment certificate

Standard
  JIS G 3475
  JIS G 3444

Material Grade
  STKN490B
  STK490

SIZE
  318.5 x 12.7 x 12000

The SM construction method is a post-tension construction method developed by our company. This is a construction method that uses 12.4 to 28.6 mm PC steel stranded wire as the prestressing steel material and tensions it one by one using a special jack. This construction method is one of the most popular construction methods used in all fields such as horizontal tightening of road bridges and railway bridges, PC tanks, PC pavement, architectural structures, earth anchors, rock anchors, etc

• 

  Fixing grip & coupler

• 

  tension jack

Ring anchor (φ17.8)

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Appearance

Epoxy Strand is an anti-corrosion steel material that is coated with high-quality epoxy powder on PC steel wires. It was developed to enhance the durability of cables. It is highly regarded for its corrosion resistance, especially in applications such as salt-damaged bridges, non-grout external cables, and ground anchors, where high corrosion resistance is required in our country’s anti-corrosion steel materials.
Furthermore, the epoxy coating provides improved fatigue resistance compared to regular PC steel wires, making it suitable for use in  “extradosed” bridges.

*Epoxy strand          *Polyethylene coated Froguard     * Flobond

Structure

Examples of installation locations

The ratio of the number of application experiments of epoxy strands in the field of bridges

“Benefits of Using Epoxy Strands in External Cables Applying epoxy strands to non-grout external cables offers several advantages compared to grout-filled external cables:

1. Labour savings and shortened construction period due to omission of grout work.
2. Omission of the connection and installation work of long polyethene protective tubes.
3. Reduction in the cable’s self-weight.
4. Easy cable inspection even after being put into service.
5. Corrosion protection throughout the entire period from manufacturing to storage, installation, and operation.”

Dimensions and Mechanical Properties

Symbol	Name	Basic Dimensions (mm)	Film Thickness (μm)	Unit Weight (kg/km)	Load for 0.2% Permanent Elongation (kN)	Tensile Load (kN)	Elongation (%)	Relaxation (%) after 1000 hours
ESWP7A	12.4	13.6	400-1200	765	136 or more	160 or more	3.5% or more	Less than 6.5%
	15.2	16.4	1,155	204 or more	240 or more	3.5 or more
ESWP7B	12.7	13.9	813	156 or more	183 or more	3.5 or more
	15.2	16.4	1,155	222 or more	261 or more	3.5 or more

• ※１: “Crown section”
• ※２: “In accordance with JIS G 3536-1999”

Key Technical Data

Item	Description
Salt Spray Test	Conforms to ASTM B117-73. No abnormalities observed in the coating after 3000 hours<br>(Under stress at 70% of the tensile strength)
Underground Exposure Test	Under tension load (0.6Pu), no coating deterioration, and no rust compared to PC steel wire after 7 years
Composite Cycle Test	No abnormalities observed over 6 months
Adhesion Performance	Comparable to bare PC steel wire
Standard Set Loss	9mm
Friction Coefficient (Within Polyethylene Sheath)	M=0.3(1/rad) or less <br> λ=0.004(1/m) or less

Regulations (Reference) Regarding Epoxy Strand Coating Thickness

Standard	Range of Coating Thickness	Measurement Method
ASTM (A882-2002)	0.38 – 1.14 mm	Electromagnetic thickness gauge. Measure one point for every 600m of the product. Measure the thickness of the crown area (Figures 1 to 6) at each measurement point.
ISO (14655-1999)	Non-fill Type: 0.65 – 1.15 mm<br> Fill Type: 0.40 – 0.90 mm	Electromagnetic thickness gauge. Divide one product into approximately five equal parts and use these five positions as measurement points. Measure the thickness of the crown area (Figures 1 to 6) at each measurement point and calculate the average of the six data points as the measurement value.
JIS (Draft)	Crown Area (Fill Type Only) – Average of 6 positions: 0.5 – 0.9 mm<br> Each Crown Area: 0.4 – 1.2 mm	Optical microscope. Measure one point at the end of one product as the measurement point. Measure the thickness of the crown area (Figures 1 to 6) at the measurement point.

Adherence of the Coating Film Until the Breakage of the Steel Material

Can be directly anchored over the coating film using specialized anchoring devices

Comparison with conventional material after 1000 hours of salt spray

Important Notices

1. Use specialized equipment and components for tension and anchoring.
2. When unloading and moving, use a forklift, hoist, or similar equipment to prevent damage to the epoxy surface.
3. When inserting, take care to prevent the wire from rubbing against metal objects such as conduit pipes.
4. In case of any damage, repair it using epoxy paint specified by the manufacturer.
5. Ensure that the bending radius does not exceed the drum diameter.
6. Do not perform electric welding or gas cutting.
7. Avoid contact with sparks generated during electric welding or gas cutting of reinforcement bars, iron plates, etc.
8. Store indoors or cover to protect from prolonged direct sunlight.
9. Remove any dirt or foreign substances, as they may affect adhesion performance and bonding with concrete.
10. Do not use epoxy coating alone in environments exposed to direct UV radiation.
11. When used as pre-tensioning material, release tension at a concrete temperature below 65°C.
12. Refer to the handling manual for instructions when using this product.

Material Grade
  SB480 NSR 
  N = Heat treated 
SR = Stress relief annealed product

Molybdenum additives
  not available

Material Grade
  SS400

Size
  10(11 use) coil
  13 x 6000
  16 x 6000
Packaging Information

A tension material for inner cables with a resin grout applied to the surface of the PC steel material and a polyethylene (PE) sheath, eliminating the need for on-site grouting.

Furthermore, since the curing speed is less affected by temperature, there is no need to use different types of resin depending on the temperature and material.

Shape

*Note: High-strength strands are used, and the technology complies with the JSCE-E145-2013 standards of the Japan Society of Civil Engineers.

Mechanical Properties for Type 29.0 (Maximum Test Force: 1139kN):

Characteristics of Moisture Hardening Elastomer Resin for PC Steel

Quality Requirements and Testing Methods

Characteristics of thermosetting Elastrol resin for PC steel

Characteristics of Michelincy

Characteristics of grease

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Unique, Reliable and Cost-effective Tools to measure surface cleanliness.

Features

■ Can be evaluated objectively

■ Quick measurement (approximately 2 seconds)

■ Easy data management (data can be exported to a PC)

■ Two convenient measurement methods (ISO judgment and pass/fail judgment)

■ Versatility regardless of the shape of the object to be inspected (applicable to curved surfaces)

WA CLEAN technology allows you to reduce your blasting costs and ensure the best coating performance through:

• Objective and repeatable cleanliness controls
• Reduction of re-blasting via immediate identification of process deviation
• Reduction of over-blasting via an accurate monitoring of the cleanliness level

Available in 2 versions:

WA Clean Heavy Duty: Industrial intensive usage / contractor	WA Clean for iOS: pocket version ideal for inspectors and supervisors

You can choose the measurement method and the results are easy to see”

Supports two types of measurement result display, ISO judgment and pass/fail judgment
Realized quality inspection that does not require craftsmanship

High-productivity grit for desanding operations

High Performance Grit is a steel grit specially designed to improve shot blasting performance in foundries and forges. It works faster and last longer. Its capacity for removing and cleaning sands, resins or scale is unequalled.

Features

• ■Reduced blasting time ～Improve process capability
• ■ Improving the whiteness of products – For customers who pursue higher quality
• ■Reduction of blasting total cost ~Reduction of blade wear in the machining process (casting), etc.

HPG is a soft high-carbon steel grit characterized by:

• The specific, elliptic shape of its grains
• A consistent and narrow size distribution
• A long working life
• A homogeneous and stable operating mix

HPG Technical datasheet

Premium product for descaling operations in wheel-blasting

STAINIUM® is specially developed for descaling applications when little roughness is required at the end of the process. Specially available in fine grades, STAINIUM® provides a more stable operating mix.

Features

■ Due to the effect of polyhedral particles, it is more abrasive than steel shot, and
it is possible to speed up the line and reduce the amount of projection.

■ The glossiness of the product increases and the whiteness improves.

■ Roughness can be kept low

CHARACTERISTICS

• CONDITIONED STAINIUM® is a new type of conditioned grit free from any sharp edge, with narrow original size grading.
• MIXED STAINIUM® is a special mix of shot and soft grit which is stabilizing in the machine as optimum operating mix.

STAINIUM® Technical datasheet

A special blasting material developed exclusively for surface preparation before painting for shipbuilding, steel bridges, etc.

This is a recycled material made by wind crushing oxidized slag obtained as a by-product from electric furnace steelworks. Slag in a melted state at around 1,500°C is blown by a high-pressure blower, rapidly cooled with mist, and made into spheres by the action of surface tension. Ceramic aggregates (coarse and fine aggregates) with various characteristics not found in natural aggregates.

Features

■Type H is thermosetting formaldehyde resin media.

■It is recommended for use in the aviation industry due to its excellent abrasive power.

■ Substrate thickness of at least 0.040 inch (1 mm) is covered, residual stress is unaffected. In the semiconductor industry, it is used to remove burrs and resin extrusions on epoxy packages, especially when type XH (melamine) is too abrasive.
■Type H complies with the MIL standard specifications, MIL-P-85891, Type II.

■It is fully polymerized and does not contain free formaldehyde.

■Anti-static processing is done.

Specifications

Physicochemical properties

Features

■ Obtained by melting a mixture of bauxite, coal and scrap iron in an electric furnace.

■ It has excellent hardness and toughness.
Abrasive products made from brown alumina (A) with special adhesives and coatings are suitable for polishing carbon steel, malleable cast iron, hardened bronze, etc.

(1) It is also used for other refractory materials, chemical fillers, precision castings, non-slip materials, and the like.

Specifications

Features

(1) Obtained by pulverizing alumina refined by the Bayer method.

(2) Compared to brown fused alumina, it has slightly higher hardness and slightly lower toughness.

■ White Alumina (WA), with special adhesion and coating, is used to make abrasives for polishing very hard steels such as high carbon steels, alloy steels and high speed steels.

■ Applications other than abrasives include precision casting sand, spray coating materials, catalyst materials, high-temperature ceramics, and super refractories.

Dummy ball is conductive media (balls) especially developed as a dummy for electroplating process of chip parts.

Features

• Much lower cost compared with steel (bearing) balls
• Stable and high quality maintained by uniform spherical shape and strictly selected size

Specifications

• Better electric current density and higher current of efficiency
• Higher efficiency of adhesion of plating and good plating quality

Features

(1) Cylinder type (SCW-C)

(2) Round type (SCW-R)

Steel grit is a polygonal particle made of special steel with sharp edges, and is used for surface treatment of paint and blasting for rust removal.
“IKK Steel Grit” can be selected from the following three types according to the application .

Specifications

Steel shot is spherical particles made of special steel and used for shot blasting and shot peening. “IKK Steel Shot” is a high-performance blasting material that enables customers to perform the world’s best blasting work .

Specifications

Packaging of PC Steel Wires (2 Strands or More) – Cross Winding

Packaging of PC Steel Wires (7 strands or more) – Center-pull Method (aligned winding)

*Important Notes: Before unpacking, please make sure to check the direction of the pull-out marks. Pulling in the wrong direction can cause problems with the withdrawal.

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Features:

1: In order to enable dependable internal epoxy resin filling, the number of tubes must be 7 or greater, according to JSCE-E141, a draft standard from the Japan Society of Civil Engineers (SCE).

2: Reference mass after coating

3: Pretensioning is the only application for the 93mm ECF strand.

4: A single cross section contains each crown portion (Figure 1).

5: The average number of crowns in a section (6 locations)

6: The low-relax ECF strand’s chemical makeup differs from that described in JIS G 3536.

7: The high-strength ECF strand’s chemical makeup differs from that described in JIS G 3536.

8: Currently, adhesion kinds are defined by the standard standards for 9 mm, 17.8 mm, and 21.8 mm.

Specification:

Speed Construction – High Strength – Smart Function

Features

■ Quickly stand up bolts to various building materials
■ Can be constructed directly without pilot holes in ALC, plywood, wood
■ Can also be used for extruded cement board / asphalt (required pilot hole)
■ Strong tensile retention with large shaft diameter Exercise power
■ Special screw design that demonstrates excellent screwing ability and holding power

Specification

Speed Construction – Safety Strength – Abundant variations

Features

■ Excellent tip shape with biting when screwed in
■ Special screws that demonstrate excellent screwability & high strength
■ Rust-resistant “Suspend SGJ treatment”

Specification

Features

■ Bring out great strength on ALC

■ Screw fixing type in which the ALC end is difficult to crack

■ Impact from drilling to fixing . Fixed with one screwdriver. ALC can drill quickly and cleanly with woodworking drill + Invera outside dryer.

■ Impact High Speed Turbo Booster New Appearance . Construction speed up

■ Drill diameter is small (Example: M10 drill diameter 14.0 mm)

Specification

Features

■ Strong head to hold firmly.
■ Fast fixation with impact driver
■ No Plug
■ High strength
■ Excellent square pit (included)

Specification

Lightweight – Speed Construction

Features

● 50% superb view from conventional anchor. It is easier to carry
● The lower large diameter only 6.4 mm. Construction speed up
● Depth of embedding is constant. Welding does not sink into the hole even in a deep hole (see figure)
● Temporarily upwards can be inserted. Anchors can be plugged in and put together in batches.

Specification

Speed construction – security strength – smart function

FEATURES

● Speedy & secure operation with impact driver!

● End part · Finish material is not easily broken

● Height can be adjusted even after construction (uneven adjustment function)

● Easy corner and ceiling construction

● Anchor removable

Specification

High hardness and resilience realized .through our unique production method

Shot peening

• Improving fatigue strength (gear, spring, cam)
• Preventing stress corrosion cracking (welded part)
• Improving frictional property (bearing, piston, cam)

Blast cleaning

Deburring/descaling small parts

Advantages

• Best suited for fine particle peening or double shot peening for more fatigue strength
• 1.3 to 1.7 times as long in its performance life as the conventional ones, to lower abrasive cost by 30%.