We offer many types of measurement instruments for the steel manufacturing industry. If you have requirements for intelligent measurement of diameter, length, thickness, etc for your steel products, we will always find a solution for you.

Eastloong are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

This model of equipment is mainly used for online size detection of hot-rolled anchor steel and rebar production lines.

Advantaged Of Our Diameter Measuring Instrument

1 Performance advantages of the caliper

1) The measurement is accurate, and the dynamic error of measuring round steel is not more than 0.01mm. The dynamic error of the rebar is not more than 0.06mm.

2) The unique jitter error elimination technology eliminates the measurement error caused by the jitter of the rolling material.

3) Fully digital high-frequency measurement system, the measurement frequency is as high as Hz, that is, rolled sections are measured per second

4) It can detect the common defects of round steel, such as: 'ear', 'wrong roll', etc.

5) Measurement data alarm function.

6) Historical data queries can be provided.

2 High precision, calibration-free

3 Provide an external database

4 Powerful defect detection capability

5 Excellent protection performance

6 independent steel guides

7 high-brightness LED light source

8 High-frequency measurement

 9 Industrial computer calculation, stable performance

10 Techniques for Eliminating Jitter Errors

11 The LED display is large and full of functions

12 Easy maintenance

Product Details

1. Product introduction:

The diameter measuring instrument has 3 built-in industrial cameras, which can take images from different angles by using the self-illumination of anchor rods and rebars during hot rolling and using the backlight to take clear images during cold rolling. It can measure the inner diameter, outer diameter, rib height, pitch, and other characteristic dimensions of the rolled material.

2. Measuring principle

3 Equipment composition

4. Function description:

Measurement characteristic values:

Anchor steel inner diameter d0, anchor steel outer diameter d1; anchor steel diagonal dimensions d2, d3;

Pitch p, relative offset dimension of transverse ribs on both sides p/2

Product parameter setting:

Parameters such as product specifications, and positive and negative tolerances can be set;

System parameter setting:

You can set the faulted channel, communication port, thermal expansion coefficient, etc.;

Data storage:

For data records, the storage time is more than 1 year; for historical data queries, the size at a certain moment can be queried, and the time is accurate to the second.

Alarm settings:

The form and threshold of over-tolerance and over-temperature alarms can be set;

Correction function:

Automatic/manual, calibrate after inputting the thermal expansion coefficient.

Over-tolerance alarm:

Related data color warning and buzzer sound alarm in the main control room; on-site LED display data color and status display alarm.

Over-temperature alarm:

Measure the temperature sensor in the car, when the temperature in the car exceeds the temperature range of the camera, the alarm light in the main control room will light up and alarm; the on-site LED display status will display the alarm.

5. Application scope

The equipment is mainly used for online size detection of hot-rolled anchor steel and rebar production lines.

6. Technical parameters:

Model Measuring range

(mm)

rolling diameter

(mm)

Measurement accuracy

(mm)

Are you interested in learning more about Round steel rebar online diameter gauge? Contact us today to secure an expert consultation!

Repeatability

(mm)

Measurement frequency

(frame/s)

Dimensions

L×W×H

Weight (KG) JX03-DG35 0-35 6-25 ±0.06 0.02 50 ×800× 200 JX03-DG50 0-50 6-40 ±0.06 0.02 25 ×800× 240

Related Machine Vision Measurement Products Recommend

Rebar Size Guide & Charts: Grades, Types, and Weight Specifications

While it's not visible in the final product, rebar plays a part in the majority of concrete projects. Rebar provides reinforced strength to any concrete structure to help them resist forces like stretching, bending, or twisting. All of these forces happen to buildings as a result of environmental factors over time. Using these reinforcing steel bars allows the structure to handle heavier loads and resist deflection.

Increasing the lifespan of structures is the main motivator for using rebar. The way that concrete and rebar work together to reinforce the concrete is crucial to the building's structural integrity and longevity. Rebar comes in a variety of different grades that are represented by the minimum yield strength of the steel. These different types of rebar are used across several building types.

How to Read Rebar Markings

At the very top of the piece of rebar, below the main ribs, there will be a letter or a symbol to indicate the production mill. Below that, there will be a number that will indicate the bar size.

Underneath the bar size, there will be a letter, usually S (carbon steel), A (axle steel), W (low-alloy steel), SS (stainless steel), or CS (low-carbon chromium). These letters resemble the type of reinforced steel.

The last marking you will find is the grade mark. The grading scale is represented by a set number of lines to represent the grading. A rebar size of 60 is represented by one line, 75 by two lines, 80 and 100 by three lines, and 120 by four.

How to Measure Rebar Diameter

To determine your rebar's diameter, you should measure the thickness of the rebar across its circular cross-section. This can either be done by using a caliper or tape measure.

When using a caliper, open the jaws and place the rebar perpendicular to the rebar's axis. From there, slide the caliper's jaws together until they touch on opposite sides of the circular rebar. Then record the measurements shown on the caliper's scale.

When trying to measure larger-diameter rebar, it's recommended that you use a tape measure. Wrapping the tape measure around the rebar, ensuring it forms a circle around the thickest part of the rebar. Note the measurement where the tape measure overlaps.

For example, if you measure 12 millimeters using a caliper or find that it aligns with the 1/2" mark on a tape measure, the rebar is 12 mm or 1/2" in diameter, respectively.

Rebar Size Chart

Below is a rebar size guide that can help you decide what is the most appropriate rebar for your construction needs.

What are the Rebar Grades?

Learning about rebar grades is necessary and it's also crucial to understand what is being measured. This includes both tensile strength and yield strength. Tensile strength refers to the maximum stress that a material can withstand before it breaks when stretched or pulled. It is measured in pounds per square inch (psi) or megapascals (MPa). Yield strength is the stress at which a material begins to deform, and it is also measured in units of force per unit area, such as psi or MPa.

Rebar comes in multiple grades, with specific grades depending on the standards within that region. The most five common grades are 40, 60, 75, 80, and 100.

Grade 40 rebar has a minimal yield strength of 40,000 pounds. Grade 60 rebar has a minimum yield strength of 60,000 psi or approximately 420 MPa. It is one of the most commonly used rebar grades for general construction purposes.

Grade 75 has a minimum yield strength of 75,000 psi or around 520 MPa, making it optimal for high-stress applications and structures that need higher strength. When a project demands a grade greater than 60 or 75, rebar with a grade of 80 is used. It has around 550 MPa and 80,000 psi as a minimum yield strength.

Grade 10 is the most high-strength rebar with a minimum yield strength of 100,000 psi or around 690 MPa. Overall, the appropriate rebar grade for the project is based on the structural design requirements, load-bearing capacity, and environment.

Types of Rebar

Some rebar types are better suited for specific environments. Mild or black rebar is most frequently used for the majority of general construction purposes. This type of rebar is used because of its strength and durability. Additionally, most general construction projects are not exposing the rebar to high-humidity locations.

Epoxy-coated rebar is most commonly used in corrosive and marine environments. Having an epoxy coating on the rebar helps to provide extra protection against corrosive elements and moisture. Stainless steel rebar is most frequently used in situations where corrosion resistance is the primary concern. Stainless steel rebar provides strength and long-term resistance from chemicals, like road salt and other chemicals.

Rebar comes in various grades, with different yield strengths, and it's available in different types suited for specific building requirements. Using rebar significantly extends the lifespan of structures as it works side by side with concrete to enhance structural integrity, ensuring durability and longevity.

Providing tensile strength, rebar enables structures to resist the stretching, bending, and twisting caused by environmental factors. This reinforcement allows buildings to handle heavier loads and resist deterioration. Understanding the importance of rebar will help you construct more formidable, cost-effective projects.

The company is the world’s best Eight-axis diameter gauge supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.