Information on the most widely used ASTM standards within the materials testing industry
Plastic Pipe Industry Testing
UnitedTest are specialized on the plastic, GRP pipe testing field. Products include tensile testing machine, pipe hydrostatic pressure testing machine, falling hammer impact tester, Pipe Cyclic Pressure Testing Machine, Rapid Crack Propagation Tester (RCP tester) etc.,
Pipe Hydrostatic Pressure Test
Pipe hydrostatic testing machine is a precision testing device specially designed to test the long-term pressure resistance and short-term burst performance of plastic pipes, composite pipes, and other pipeline materials. It is widely used in pipe manufacturing enterprises, quality inspection agencies, and research institutions, and is one of the core pieces of equipment for evaluating pipe quality and service life. It can also undergo stability performance testing (110°C, 8760 hours), pipe slow crack resistance testing (notch test), fitting system compatibility, and other pressure tests.
Melt Flow Indexer is used to measure the flow rate of different polymers. The reported Melt Index value helps to distinguish between the different Grades of Polymers. This is due to the fact that plastic materials are seldom manufactured without incorporating additives, which affect the processing characteristics of material like stability and flowability.
Heat deflection temperature (HDT) (ISO 75, ASTM D648) indicates the relative behavior of different types of material under load at elevated temperatures. It is determined for materials such as thermoplastics, hard rubber and duroplastic laminates.
Vicat softening temperature (VST) (ISO 306, ASTM D1525) provides a value for the temperature at which a thermoplastic material begins to soften rapidly. This temperature is determined using a needle-shaped indenter with a round cross-sectional area of 1 mm.
Pipe ring stiffness tester is used to determine the ring stiffness of circular cross-section thermoplastic pipes, according customer’s request, it can also execute compression, ring stiffness, ring softness and creep ratio test. This tester meet the requirement of all kinds of plastic pipes, structured-wall pipes, PVC, HDPE, LDPE, PE corrugated pipes, helically wound pipes etc.,
Conform with Standard ISO 9969, ISO 9967. ASTM D2412, EN1446, AS 1462.22 pipe ring stiffness test machine
Oxygen Index Apparatus/LOI (Limitation Oxygen Index tester) is widely used to measure burning performance of plastics, rubber, fiber, foam, softening sheet, film etc.,
The Oxygen Index is, perhaps, the most economical and precise quality control test of combustible materials. Its ease of use together with high levels of precision has made this technique a primary characterising and quality control tool to the plastic and electric cable industries and it has been specified by several military and transport groups. The technique measures the minimum percentage of oxygen in the test atmosphere that is required to marginally support combustion.
Pipe Falling Hammer impact testing machine is a specialized device used to determine the resistance of plastic pipes, sheets, and products to external impact. lt is suitable for testing materials such as PVC-U water supply pipes, sewage pipes, low-pressure water supply pipes, low-pressure water delivery pipes, core-layer foam pipes, double-walled corrugated pipes, PE pipes, PP pipes, and rigid plastic sheets. This equipment meets the standard of ISO 3127, ASTM D2444, DIN-EN 744, BS-EN 1411 for quality inspection and scientific research and analysis in fields such as building materials, chemicals, and petroleum. The testing machine employs an electromagnetic braking design to prevent secondary impacts and is equipped with automatic lifting, height numeric display, and a V-shaped sample clamping device.
UnitedTest is a world-leading professional supplier of testing equipment for plastics and reinforced plastics. Leveraging years of accumulated manufacturing experience, it provides precise and reliable material testing solutions for various industries. Since its establishment, the company has consistently focused on the field of plastic material testing, making technological innovation its core, deeply cultivating niche markets, and becoming a trusted choice for numerous enterprises, research institutions, and quality inspection agencies.
Environmental Stress Cracking ApparatusUnitedTest company's core products cover the full range of testing equipment for plastics and reinforced plastics, including electronic universal testing machines, Pipe Hydrostatic Pressure Testing Machine, Hot cold water thermal cycle testing machine, Piping System Joints Leak Tightness Tester etc., meeting the testing needs of products in different forms such as sheets, pipes, and fiber-reinforced composites. The equipment can accurately perform multiple mechanical property tests, including tensile, compressive, bending, shear, and peel tests, precisely obtaining key parameters such as strength, elastic modulus, and elongation, comprehensively covering the entire process of material R&D, production quality control, and product certification.
In terms of technical strength, UnitedTest adheres to high-standard manufacturing principles. The equipment uses servo motor drives and precision screw transmission systems, achieving stepless speed regulation from 0.001 mm/min to 2000 mm/min, with a control accuracy of grade 0.5, ensuring the accuracy and repeatability of test data. Furthermore, the products are deeply aligned with international and industry standards such as GB, ISO, ASTM, JIS, DIN, and can provide customized non-standard solutions according to customer requirements, suitable for special testing environments such as high and low temperatures and corrosion.
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