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LSY-20 Fully Automatic Low-Temperature Freeze-Thaw Testing Machine

This product employs the air-freezing–water-thawing method. Before powering on the instrument, fill the water reservoir completely, place the test specimen in the chamber, and then switch on the unit and press the start button. The freeze–thaw machine automatically freezes the specimen in the chamber to the set temperature in ambient air, holds it at that temperature for a user‑adjustable duration, and then automatically injects water at the set temperature, maintaining it at that temperature for another user‑adjustable period. Once the prescribed thawing time has elapsed, the machine automatically drains the water back into the reservoir, increments the cycle count by one, and automatically initiates the next freeze–thaw cycle.

Category:

Concrete Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LSY-20 Fully Automatic Low-Temperature Freeze-Thaw Testing Machine

Description

Product Introduction:

This product employs the air-freezing–water-thawing method. Before powering on the instrument, fill the water reservoir completely, place the test specimen in the chamber, and then switch on the unit and press the start button. The freeze–thaw machine automatically freezes the specimen in the chamber to the set temperature in ambient air, holds it at that temperature for a user‑adjustable duration, and subsequently injects water at the set temperature, maintaining it at that temperature for another adjustable period. Once the prescribed thawing time has elapsed, the machine automatically drains the water back into the reservoir, increments the cycle count by one, and automatically initiates the next freeze–thaw cycle.

Implementation Standard:

GB/T 50082 “Test Methods for Long-Term Performance and Durability of Ordinary Concrete”

SL352 “Hydraulic Engineering Industry Standards and National Industry Standards”

GB/T 3810 “Test Method for Freeze–Thaw Resistance of Ceramic Tiles”

GB/T 2542 “Test Methods for Masonry Bricks”

GB/T 9966.1 “Test Methods for Natural Stone — Part 1: Determination of Compressive Strength After Drying, Water Saturation, and Freeze–Thaw Cycles”

JG158 “Method for Exterior Wall External Thermal Insulation System Using Rubber Powder and Polystyrene Board Particles”

GB/T 8042 “Test Method for Freeze–Thaw Resistance of Asbestos‑Cement Corrugated Flat Tiles”

Technical features:

1. Independently developed and designed the control program for a low-temperature freeze–thaw testing machine; after years of practical experience, it has been continuously updated and upgraded, featuring automatic control, real-time dynamic display of data curves, and test data…

Automatic data storage, automatic recovery upon unexpected test termination, water‑shortage protection, timeout protection, overpressure protection, overtemperature protection, and other safeguard functions ensure the freeze–thaw testing machine operates smoothly and safely.

2. The structural design is rational, making it convenient for laboratory personnel to operate and reducing labor intensity.

3. The compressor is an original imported Taikang unit, and all major refrigeration components are sourced from overseas. It uses Chemours’ 404A high-efficiency refrigerant, delivering excellent cooling performance and stable operation.

Fixed.

4. The three‑stage long‑shaft fan provides circulating airflow; under full‑load operation, the temperature difference at all points within the freeze–thaw chamber does not exceed 1°C. The fan motor is externally mounted, insulated from the humid air inside the chamber, thereby extending its service life.

It’s long, and the axial‑flow fan with an impeller design delivers greater airflow and superior cooling performance.

5. The equipment is fitted with low‑center‑of‑gravity casters, making it easy to move, space‑efficient, and quiet.

Technical Specifications:

Project	Details
Model number	LSY-20
Condenser cooling method	Air-cooled
Freeze-thaw temperature	-35℃ to 50℃
Temperature display	The temperature variation within the enclosure does not exceed 1°C.
Temperature recorder	Touchscreen control instrument
Refrigeration compressor	French Tecumseh Compressor
Internal dimensions of the test chamber	1000x500x540mm
Effective volume	1000x500x400mm
External dimensions	1700x910x1320mm
Specimen capacity	A single layer of 32 concrete test cubes measuring 100 mm × 100 mm × 100 mm, or equivalent specimens of other dimensions with the same mass.
Maximum operating power	4.8kW
Equipment weight	240Kg

Related Product

HC-40 Concrete Multi-functional Strength Tester

The HC-40 concrete multi-functional strength tester is a high-performance testing device integrating multiple advanced technologies, specifically designed for evaluating the strength and quality of concrete.

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

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

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.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

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:

LSY-20 Fully Automatic Low-Temperature Freeze-Thaw Testing Machine

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Address:Tianjin Jinghai Economic Development Zone

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