Real Time Online High Frequency Detection Detector Bqj D430 - China
price: contact company for price
Purpose: Take all-round photography of rods and wires, bar steel, square steel, rebar, etc.
in a red-hot state, generate complete surface images, analyze and classify identified defects, and provide intuitive visual feedback on the surface quality of rolled products.
Establish a connection based on the collected defect samples and manually labeled fault causes, thereby effectively guiding process adjustments and greatly reducing the generation of waste products.
Parameter Specification
Measured object varieties rods and wires, rebar, square steel, flat steel
Application technology high-speed and high-temperature environment image acquisition technology, automated detection technology, machine intelligence deep learning technology
Model and technical parameters V/51000 (V is rolling speed)
Detection accuracy at 10 m/s 0.2 mm
Detection accuracy at 50 m/s 0.4 mm
Detection accuracy at 100 m/s 2 mm
Minimum lateral defect 0.01–0.02 mm
Minimum depth defect 0.25 mm
Standard equipment configuration The standard configuration of the entire set of equipment: image acquisition vehicle, terminal control cabinet, cooling unit, air compressor, and auxiliary facilities
Adaptable rolling speed ≤120 m/s
Adaptable rolling temperature ≤1200 ℃ High-Frequency Rebar Measuring Instrument for Steel Mills
In modern steel production, accurate measurement of deformed rebar diameter and profile is essential for maintaining product quality and meeting international standards.
Traditional measurement tools often struggle to measure ribbed steel bars accurately during high-speed rolling processes.
Our Online Rebar Diameter Measurement System is a high-precision rebar measuring instrument designed specifically for steel rolling lines.
It provides real-time online rebar diameter measurement, enabling steel mills to monitor production quality continuously and reduce deviation in finished products.
Using advanced laser scanning technology and dedicated profile analysis software, the system delivers precise rebar profile measurement, including base diameter, rib height, and ovality, even under high-temperature and high-speed production conditions.
Challenges of Measuring Deformed Rebars
Unlike smooth round bars, deformed reinforcing bars feature ribs and complex surface geometries that make accurate measurement significantly more difficult.
Traditional diameter gauges often measure only the outer rib peaks, which results in inaccurate base diameter readings and inconsistent quality data.
Steel mills commonly face the following measurement challenges:
● Complex ribbed geometry affecting laser detection
● Difficulty distinguishing rib peaks from base diameter
● High-speed rolling lines exceeding traditional gauge response speed
● Measurement errors caused by vibration and temperature
● Lack of real-time feedback for rolling mill adjustments
Without accurate rebar profile measurement, steel manufacturers may experience product rejection, inconsistent mechanical properties, and reduced production efficiency.
Company Contact:
- Posted By: TIANJIN EASTDRAGON PHOTOELECTRICITY CO.,LTD
- Phone: 022 23783384
- Address: K1-4, No.6 HaiTai development 6th road, green industry base, Huayuan industrial zone, Tianjin , Tianjin , China
- Email:

- Website: https://www.measurementon-line.com/
Published date: March 30, 2026
- Business Description: Eastloong Measurement & Control Technology Co.,Ltd. is a professional company to provide the overall measurement scheme for the long steel rolling production line.
It was founded in 2004 and is located in the beautiful Tianjin High tech Industrial Zone, a green industry base called the "National Software Industrial Park".
It is composed of optical measurement experts and professional technical talents in optics, machinery, electronics, software, computer, and other fields.
It is a specialized company that integrates research and development, production, sales, installation, and after-sales service.
The first domestic photoelectric camera diameter gauge (in 2000), the first laser scanning swing diameter gauge (in 2018), the first rotary diameter gauge (in 2021), the first surface defect detector (in 2022) , and the first rebar measurement instrument(in 2023) were all born in Eastloong.
The company takes research and development as the leader and quality as the guarantee, with over one hundred patents and software copyrights.
For many years, Eastloong has been innovating and developing in the field of steel rolling measurement with a focused spirit and enterprising attitude, and has been highly praised by customers.
Now more than 600 gauges have been installed the steel rolling line in such as Baosteel, Ansteel, Hebei steel, Jianlong group, Shougang steel, Tata steel, JFE, Valin steel ,Shandong steel,etc.
in many countries.
Eastloong will still focus on steel rolling measurement ,provide the best service for global steel enterprises.
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