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DWC Low-Temperature Impact Test Tank

A compressor‑based refrigeration system newly developed in accordance with the requirements for low‑temperature equipment specified in GB/T 229‑07, “Metallic Materials — Charpy Pendulum Impact Test Method.” This equipment employs cascade refrigeration technology and utilizes thermal equilibrium principles together with a stirring‑circulation system to achieve automatic, uniform cooling of test specimens. It can also be used for other low‑temperature testing and experimental applications.

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Environmental Testing Equipment

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E-mail:

lbt@lbt.ltd

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+86-15102211717

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Description

Low-temperature test tank:

Low-temperature tank models: DWC-30, DWC-60, DWC-80, DWC-100

Product Introduction:

A compression‑type refrigeration unit newly developed in accordance with the requirements for low‑temperature equipment specified in GB/T 229‑07, “Metallic Materials — Charpy Pendulum Impact Test Method.” This equipment employs a cascade refrigeration system and leverages thermal equilibrium principles along with a stirring‑circulation mechanism to achieve automatic, uniform cooling of test specimens. It can also be used for other low‑temperature testing and experimental applications.

Technical Specifications:

Temperature control range: 30°C to -60°C (customizable to -70°C, -80°C, or 100°C)
Temperature control accuracy: ±0.2℃
Uniformity: 1℃
Cooling rate (at room temperature 25°C): from room temperature to 0°C, approximately 1.5°C/min.

0℃ to −20℃, approximately 1.3℃/min

−20℃ to −40℃, approximately 1.0℃/min

−40℃ to −60℃, approximately 0.8℃/min

Maximum external dimensions: 910 × 510 × 950 mm (L × W × H)
Cooling tank dimensions: 300 × 160 × 120 mm (length × width × height)

Effective usable space: 140 × 160 × 120 mm (L × W × D)

Number of specimens that can be loaded: 72 (impact specimen dimensions: 10×10×55 mm)
Independent digital timer: 1 second to 59 minutes and 59 seconds, with a resolution of 1 second.
Cooling medium: methanol or anhydrous ethanol, approximately 5 L (Use of 75% alcohol-based disinfectant is prohibited.)

10. Power supply: 220 V ± 10%, 50 Hz, 2.0 kW

11. Operating ambient temperature: 5°C to 30°C

Structure and Operating Principle

This equipment comprises a compressor-based refrigeration system, a heating unit, a temperature control system, a cooling tank, a stirring system, and an automatic timing and alarm device, among other components.

Once the “Refrigeration” switch is activated and all compressors have started, the refrigeration system enters its normal operating state. The refrigeration compressor continues to run; as the temperature approaches the setpoint, the temperature controller, employing an intelligent PID algorithm, regulates the heater to offset the excess cooling capacity generated by the system, thereby maintaining a constant temperature. Stirring ensures continuous circulation of the cooling medium within the cooling tank, resulting in uniform and consistent temperature distribution.

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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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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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DWC Low-Temperature Impact Test Tank

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Address:Tianjin Jinghai Economic Development Zone

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