Information on the most widely used ASTM standards within the materials testing industry
Model: UT1036, 3000mm GRP Pipe Hoop Tensile Test
UnitedTes UT1036 Pipe Apparent Hoop Tensile Testing Machine consists of a main unit, hydraulic power system, computer measurement and control system, and electrical control system. It uses an electro-hydraulic servo control system capable of meeting the three closed-loop control requirements for load, deformation, and displacement, and can smoothly switch according to the set program to meet the testing requirements of different materials.
UnitedTest Pipe Apparent Hoop Tensile Testing Machine complies with ASTM D2290, specialized in testing apparent hoop tensile strength of plastic and reinforced plastic pipes. It uses a self-aligning split disk fixture to apply tensile stress to pipe ring samples along their contour.
It has tailored procedures for different pipes and fits diameters from 300mm to 3000mm. It applies axial tension till pipe rupture, auto-calculates strength via fracture load and pipe dimensions, serving R&D and quality control in pipe industries.
General introduction
UnitedTes UT1036 Pipe Apparent Hoop Tensile Testing Machine consists of a main unit, hydraulic power system, computer measurement and control system, and electrical control system. It uses an electro-hydraulic servo control system capable of meeting the three closed-loop control requirements for load, deformation, and displacement, and can smoothly switch according to the set program to meet the testing requirements of different materials.
UnitedTest Pipe Apparent Hoop Tensile
Testing Machine complies with ASTM D2290, specialized in testing
apparent hoop tensile strength of plastic and reinforced plastic pipes.
It uses a self-aligning split disk fixture to apply tensile stress to
pipe ring samples along their contour.
It has tailored procedures for
different pipes and fits diameters from 300mm to 3000mm. It applies
axial tension till pipe rupture, auto-calculates strength via fracture
load and pipe dimensions, serving R&D and quality control in pipe
industries.
This product has a reasonable structure and is aesthetically pleasing. The main unit has high rigidity and generates minimal ground impact during tests, possessing hardware and software protection functions that ensure safety and reliability. The main unit employs hydraulic wedge-type clamps with an upper cylinder single-space structure and bi-directional servo cylinder control, achieving closed-loop control for tensile/compression tests in the lower space while adhering to ergonomic principles for comfortable operation. The design of the jaws allows for parallel insertion of specimens, minimizing the need for frequent adjustments of the test space during the testing process. The main unit features a steel structure frame with rigid connections, directly utilizing the piston's lift to adjust the test space, making it convenient and efficient. The measurement and control system comprises a measurement and control card, servo valves, load sensors, displacement sensors, extensometers, and a computer, together forming a closed-loop servo control system that can manually or automatically control the test process by programming. It automatically measures test parameters such as force, displacement, and deformation, and can analyze various test results automatically or manually; test reports can be edited according to user needs and equipped with a network interface to enable the transmission of experimental data.
What's the split disk test for plastic or reinforced plastic pipes hoop tensile test?
The apparent hoop tensile testing of plastic or reinforced plastic pipes using the split disc method is a standard testing procedure for determining the apparent hoop tensile strength of plastic pipes under axial tensile load. This method loads the pipe using a split disc grip to simulate the stress state under actual use conditions, and is suitable for reinforced thermosetting resin pipes and thermoplastic pipes.
Testing Principle
The mechanical performance indicators such as elastic limit, elongation, and elastic modulus of the material are determined through axial tensile load. The test results can be used in research and development, engineering design, and quality control fields.

Key Features
Self-Balancing Door-Type Reaction Frame
The use of a double-acting hydraulic cylinder ensures good sealing, high precision, and consistency. The long-stroke double-acting hydraulic cylinder meets the testing requirements for samples of various lengths and can simultaneously meet the testing needs for materials with significant differences in tensile elongation.
The host machine adopts a rigid structural design with a low center of gravity; the main impact energy is released by the hydraulic unit, effectively reducing the impact and noise when samples break, resulting in minimal ground vibration; the hydraulic cylinder is positioned above, with a rational setup for the tensile space, making operation convenient.
The host machine employs a frame structure and high-precision bidirectional load sensors for tension and compression. The sensor has a reasonable structure, excellent performance, high measurement precision, and good linearity. The host machine features high rigidity and strong resistance to lateral forces.
Functions and Basic Parameters:
1.Provides a multifunctional integrated reaction frame for structural testing.
2. The multifunctional integrated reaction frame is designed based on the self-balancing concept.
3. The vertical bearing capacity design value of the main beam is 250kN~1000KN within an adjustable loading range.
4.
The reaction frame can withstand a bidirectional horizontal load of
250kN~1000KN and can resist horizontal reactions generated during
eccentric column tests and complex joint loading tests
5. The reaction frame uses Q345-B structural steel.
The two slip fixtures are fixed on the finely processed guide surface, and the running direction is constrained by the guide rails. When stressed in different directions, there will be no deflection, ensuring that the sample during the tensile process experiences a uniform external tensile force.
The load has a continuous characteristic without staging, showcasing superior performance.
The bottom-mounted load sensor ensures that the additional resistance during tensile testing is zero.
The hydraulic system is equipped with high-quality brand hydraulic components and accessories, achieving a system that is leak-free and pollution-free.
A servo valve is adopted, which responds swiftly and maintains high control precision, while also enhancing resistance to contamination and ease of maintenance.
Main technical specification
| Model | UT1036H |
| Max. load | 100KN/200KN/300KN |
| Measuring force range | 3~200KN |
| Accuracy of load | ±0.5% of indicated value |
| Accuracy of deformation | ±0.5%, resolution: 0.005mm |
| Deformation measuring resolution | 0.001mm |
| Constant load, Range | 0.4%~100%FS |
| Hoop tensile fixture max. diameter | 2600mm pipe |
| Hoop tensile fixture groove suitable for pipe range | 300mm ~ 2600mm pipe |
| Max. tensile space | 1800mm |
| Piston stroke | 500mm |
| Max. working pressure | 20Mpa |
| Max. piston speed | 150mm/min |
| Frame type | Self-Balancing Door-Type Reaction Frame |
| Two column effective distance | 1300 (Width)*550 (depth) mm |
| Dim. of frame | 2400×1250×3300mm |
| Dim. of control box | 1120×600×920mm |
| Weight of frame | 3800kg |
| Weight of hydraulic power unit | 400kg |
| Weight of 2600mm split hoop fixture | 4600kg |
| Power | 380V, 50HZ, 3 phase |
Main accessories (Standard delivery with machine)
| High Stiffness Frame | 1 set | |
| Controlled box (Oil cabinet) | 1 set | |
| Pressure sensor (500KN) | 1 set | |
| Hydraulic power system | 1 set | |
| High-precision electro-hydraulic proportion servo valve | 1 set | |
| Photoelectric encoder for displacement | 1 set | |
| Pipe hoop tensile test fixture | 1 set | |
| Tool kit (screwdriver, spanner etc.,) | 1 set | |
| Professional testing software(FastTest, English version) | 1 set | |
| Metal tensile testing method (ASTM D2290); | ||
| Compression testing method (ASTM E9); | ||
| Customize testing method function available. | ||
| Computer (HP or LENOVO computer, 19-inch LCD monitor, English Win10 system) | 1 set | |
| Printer (HP A4 color inkjet printer) | 1 set | |
| Documents (Manual, packing list, certificate) | ||
What Is the standard ASTM D2290, test method?
ASTM D2290 is a standard test for measuring the apparent tensile strength of plastic pipe test specimens. ASTM D2290 features a fixture that includes a holder with various inserts that are sized to match the range of pipe inside diameters that need to be tested. The inserts transfer the load and allow the pipe to be pulled apart to produce “apparent tensile strength”. It is an apparent tensile strength, rather than a true tensile strength because of a bending moment imposed during the test at the split between two split disk test fixtures. This moment is induced by the change in contour of the ring between the two disk sections as they separate. Apparent tensile strength test results are available at yield, rupture, or both.
Testing Method
Pre-treatment: Treat the pipes according to standard requirements for temperature, humidity, and other conditions.
Loading Method: Apply axial tension using a split disc grip until the pipe ruptures.
Data Calculation: Calculate the apparent circumferential tensile strength based on the load at fracture and the dimensions of the pipe. It should be noted that this testing method requires attention to: different programs correspond to different pipe diameters (e.g., Programs A, B, and C are applicable to reinforced thermosetting pipes, thermoplastic pipes of any size, and thermoplastic pipes with a nominal diameter ≥ 4 inches, respectively), and the test results reflect the mechanical performance close to the testing conditions, not suitable for scenarios that differ significantly from actual use conditions.
Scope of Application
This method is applicable to reinforced thermosetting resin pipes (such as glass fiber reinforced plastic pipes) and extruded thermoplastic pipes (such as polyethylene, polybutene, etc.), covering pipes with diameters ranging from 4 inches to 8 inches.
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