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YJZ-800C Fully Automatic High-Strength Bolt Tester

This testing machine is specifically designed for determining the torque coefficient of high-strength steel bolts.

Category:

Steel Structure Testing Equipment

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E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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YJZ-800C Fully Automatic High-Strength Bolt Tester

Description

Product Introduction:

This testing machine is specifically designed to determine the torque coefficient of high-strength steel bolts. Throughout the entire testing process, only bolt installation and removal require manual intervention; all other steps are performed automatically.

The product complies with Q/32011JCD01-2005 “Technical Specifications for Automatic High-Strength Bolt Testing Instruments,” as well as relevant standards for high-strength large hexagonal bolted connections in steel structures, including GB/T 1231-2024, GB/T 1229-2006, GB/T 1230-2006, and GB/T 3633-1995.

This testing instrument can measure, display, and print the axial force and torque (or torque coefficient) of large hexagonal high-strength bolted connections (M12–M36) and torsional-shear high-strength bolted connections (M16–M30).
It enables automatic tightening, loosening, and resetting of high-strength bolts, featuring a high degree of automation and convenient, rapid operation. The LCD display shows parameters such as axial force, torque, and torque coefficient, and can automatically calculate and output the standard deviation and coefficient of variation. It also includes data storage and retrieval functions, and the built-in printer on the controller allows for printed output.

This testing machine features a well‑thought‑out design: a gear‑rack drive mechanism enables smooth sliding of the tailstock, ensuring stable operation, effortless handling, and precise control. The working area is equipped with a transparent protective guard that prevents specimen fragments from flying out during testing, thereby safeguarding operator safety.

Technical Specifications:

● Axial force measurement range: 10–500 kN

● Torque measurement range: 50–2000 (Nm)

● Resolution: ±0.1 (kN), ±1.0 (kN)

●Indication error: ±1% (kN), ±1% (kN)

● Display mode: Computer monitor

● Peak values of axial force and torque are maintained.

● Can store 420 sets of data, with long-term retention and on-demand retrieval.

※Each set of test data includes the test date, test number, the model, grade, and specification of the high-strength bolts, as well as the N measured axial forces and torques, along with the average axial force, average torque, average torque coefficient, standard deviation, and coefficient of variation.

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Keywords:

YJZ-800C Fully Automatic High-Strength Bolt Tester

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Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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