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A rubber cutter is a tool used for preparing specimens prior to tensile testing of rubber or plastic materials. Based on the shape of the cut, it can be categorized into dumbbell‑shaped, tear‑shaped, star‑and‑moon‑shaped, and other types. According to the dimensions specified in national standards, common sizes include 6×115 mm, 4×75 mm, 10×120 mm, and 10×150 mm (see the table below for detailed specifications). Given the diversity of materials to be tested and their varying requirements, the applicable standards also differ. Therefore, before ordering a cutter, please consult relevant standards such as GB/T 528, GB/T 529, GB/T 8083, GB/T 15340, ASTM, or contact us for guidance. Additionally, we can customize rubber cutters to U.S. standard specifications or other special dimensions upon customer request.
The foam compression set tester consists of parallel steel plates, a restrictor, and fasteners, and complies with the requirements of GB/T 6669-2008 and ISO 1856:2000, “Determination of Compression Set of Flexible Cellular Plastics.” At a specified temperature, the foam specimen is maintained under a constant deformation for a defined period. After the specimen has recovered for a certain time, the effect of the deformation on the test thickness is observed. The compression set of the material is expressed as the percentage ratio of the difference between the initial and final thicknesses to the initial thickness.
Fiber Slag Ball Content Tester, Slag Ball Content Tester, Mineral Wool Slag Ball Content Determiner
This instrument is designed and manufactured in accordance with GB/T 5480-2017 “Test Methods for Mineral Wool and Its Products,” and can be used to determine the slag ball content in glass wool and its products, slag wool, rock wool and their products, as well as aluminosilicate wool and its products. By exploiting the differences in gravitational and drag forces experienced by slag balls and fibers when they move in an aqueous medium, the slag balls are separated from the fibers; the slag ball content in the mineral wool is then quantified through drying, sieving, and weighing.
BM-III Pendulum Friction Coefficient Tester, Digital Display Pendulum Friction Coefficient Tester
The pendulum tester is a dynamic pendulum‑impact type instrument. It was developed based on the fundamental principle that “the loss of potential energy of the pendulum equals the work done to overcome friction between the rubber pad mounted at the end of the pendulum arm and the road surface as it slides.”
Stacked saturator, Type GDB-1 stacked saturator, all-stainless-steel stacked saturator
A standard instrument used to prepare sandy soils and relatively permeable cohesive soils into saturated specimens. It complies with GB/T 50123-2019 “Standard for Geotechnical Test Methods” and JTG E40-2007 “Highway Geotechnical Testing Procedures.”
Pre-laid waterproof membrane impact resistance testing apparatus; steel ball penetration water tightness testing equipment—available for immediate delivery.
The concrete core‑sample leveling device is primarily used to level the end faces of concrete core samples during the core‑drilling method for assessing concrete compressive strength.
Railway Ballast Needle‑and‑Flake Gauge _ Needle Gauge _ Flake Gauge _ Needle‑and‑Flake Gauge
The product complies with TB/T 2328.15-2008, “Test Methods for Railway Ballast – Part 15: Test for Needle‑Shaped Index and Flaky‑Shaped Index.”
It is suitable for testing the needle‑shaped index and flaky‑shaped index of railway ballast.
This set of gauges refers to all gauges used in the measurement of pipe dimensions as specified in “JG 3050-1998 Electrical Conduit.”
This set of gauges is applicable to circular electrical conduits made of plastic insulating materials, intended for protecting and securing wire or cable installations within buildings or structures.
The electrically controlled water‑spraying device is manufactured in accordance with the JC/T 1024—2019 standard “Wall Finishing Mortar” and features timed watering, automatic humidification, and automatic temperature control.
This test is applicable to the needle‑shaped index and flakiness index of railway ballast.
The BC-190 grouting material length-measuring instrument is designed and manufactured in accordance with the standard JG/T 408-2019, “Grouting Material for Rebar Splices,” and is used to determine the autogenous drying shrinkage of sleeve‑grouting materials. The instrument consists of a reference rod and a support bracket, with an indicator dial mounted on the bracket.
This device is suitable for conducting bending tests on metallic conduits and similar materials, with a bending angle of 90°. After the test, the specimen is inspected for cracks. It complies with the requirements of GB 20041.21-2008 “Conduit Systems for Cable Management—Special Requirements for Rigid Conduit Systems,” GB/T 14823.2 “Conduits for Electrical Installations—Special Requirements—Rigid Insulated Plain Conduits,” JG/T 3050 “Insulated Electrical Conduits and Fittings for Building Applications,” and ZBG 33008 “Corrugated Polyvinyl Chloride Plastic Wire Conduits,” among others.
The concrete core‑sample leveling device is primarily used to level the end faces of concrete core samples during the core‑drilling method for assessing concrete compressive strength.
The BCL‑355 compensating concrete shrinkage and expansion rate tester is designed in accordance with the standards GB 50119‑2003, “Technical Specification for the Application of Concrete Admixtures,” and GB/T 23439‑2017, “Concrete Expansive Agents.” It is a specialized testing instrument primarily used to determine the longitudinal restrained expansion rate and the longitudinal restrained drying shrinkage rate of compensating concrete, thereby helping to establish the appropriate dosage of concrete expansive agents for engineering applications. The instrument features simple operation and convenient readings.
GJY-100 Type Concrete Vertical Expansion Rate Tester
This instrument is designed and manufactured in accordance with GB 50119-2003, “Code for Design of Concrete Admixtures,” and is suitable for determining the vertical expansion rate of expansive grouts.
The JH-320 Alkali–Aggregate Expansion Meter is used to measure the dimensional changes of cement mortar specimens, thereby assessing whether the expansion caused by the reaction between alkalis in cement and reactive aggregates poses a potential hazard. Featuring a simple structure, convenient operation, and accurate, rapid measurements, it is one of the essential instruments for evaluating alkali–aggregate reactions.
Product Overview: Compliant with the provisions of GB/T 50082-2009 “Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete” and JTG E30-2005 “Test Procedures for Cement and Cement Concrete in Highway Engineering,” this specialized instrument is designed to measure changes in the length (or volume) of concrete specimens during hardening under specified environmental conditions. It provides a reliable basis for research, education, quality control, and testing of concrete properties in construction research institutes, educational institutions, and design and construction organizations.
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