AGR piping boasts a highly smooth inner wall with minimal water resistance and does not produce any buildup. Moreover, AGR piping has a low oxygen permeability, just 1/13 to 1/15 of PP-R and PE green plastic piping, thereby preventing the proliferation of microorganisms and bacteria over time. Additionally, AGR piping materials and fittings do not contain heavy metal ion stabilizers, ensuring the longevity of the piping system and the quality of drinking water. Consequently, AGR piping is clean and hygienic, and can be widely used in clean water supply systems for precision chemicals and electronics industries, drinking water supply pipelines, as well as fluid transport systems in the beverage and beer industries. Among all domestic plastic piping, AGR piping meets the WHO sanitation standards.
The AGR pipeline boasts the following advantages:
Low-temperature resistance, high impact resistance
AGR pipeline systems can operate normally in extreme cold regions with temperatures as low as -30°C, with no concerns about accidents such as impact and damage during transportation and construction.
AGR pipeline systems exhibit excellent impact resistance. Under -10℃ conditions, 20×2.3 pipe material can withstand a 6Kg hammer's free-fall impact from a height of 0.8 meters without cracking; pipe material with a nominal diameter of 40mm or more can endure a 9Kg hammer's free-fall impact from a height of 2.0 meters without cracking. In contrast, other plastic pipe components tested under the same conditions would be shattered by the hammer, failing to withstand such high-intensity impact tests.
Stiffness, high pressure resistance
The AGR pipeline system boasts tensile strengths ranging from 50.3 to 53.2 MPa, an elastic modulus of 2156 MPa, and a linear expansion coefficient of just 6×10^-5 m/m°C. These rigorous and scientific test results demonstrate its excellent rigidity. Compared to pipes like PP-R and PE, the AGR pipeline is resistant to deformation from heat, making it suitable for both exposed and concealed installations. It requires minimal supporting materials during construction, offering both aesthetics and cost-effectiveness.
High rigidity also ensures that AGR piping and fittings can withstand greater pressure resistance. Under equal pressure conditions, the wall thickness of AGR is thinner than that of PP-R, PE pipes, etc. Using AGR pipes with smaller diameters can achieve the same water flow, thereby saving costs and improving installation efficiency.
High bonding strength of pipes and fittings ensures the safety and reliability of the pipeline system.
AGR Pipe Systems utilizes the积水No.80 adhesive. This adhesive has excellent affinity with AGR resins, offering rapid curing speeds, resulting in superior bonding strength and the dual benefit of quick construction.
Our pressure tests on pipe fittings and pipe connections reveal that all bursting failures occur on the pipe material, not at the joint. Additionally, when samples from the pipe fitting connections are subjected to tensile tests, the failure points are exclusively on the pipe, with the joint remaining intact. Under a static water pressure of 17.5 kg, the pipe fitting connections withstand ±4-degree "static water pressure alternating bending tests" over 2,000 cycles without leakage or loosening. These stringent tests demonstrate the high bonding strength of AGR pipes and fittings, ensuring the construction of stronger and more reliable water supply networks.
AGR piping is unaffected by residual chlorine in water. Many polyolefin materials, such as PP, PE, and PB, may experience polymer chain segment decomposition when exposed to residual chlorine in water, leading to pipe burst and leaks. It has been reported that such issues have occurred with PB piping in the United States. AGR's immunity to residual chlorine further enhances the safety and reliability of the AGR piping system.
Excellent seismic performance
Under 17.5 kg static water pressure, a "shear test" was conducted on a 2-meter long pipe fitting assembly by securing one end at 0.5 meters and applying an external force to lift the other end horizontally by 0.3 meters; there was no leakage at the joint or whitening of the pipe material. During a tensile test at a rate of 10 mm/min, the assembly was elongated by 5% without any joint disengagement or whitening, breakage, or other anomalies in the pipe material. For the fatigue test, the pipe assembly, 0.3 meters in length, was fixed at one end and subjected to 50 sine wave deformations of 1 Hz frequency along the pipe axis at the other end, totaling 50 vibrations; the test results showed no signs of damage to the pipe, with only a deformation of 3.5%, fully meeting the stringent seismic pipeline design requirements.
5. Long lifespan
The pipeline internal hydrostatic creep test was conducted strictly according to the testing methods specified in ISO/DIS 11673 standards. Based on the test results, it is inferred that under 20℃ conditions, after 50 years, the creep resistance of the AGR material remains at 20.7 MPa. Additionally, the AGR pipeline exhibits strong resistance to strong acids, alkalis, and various solvents, ensuring a service life of over 50 years.
6. Easy installation and construction
The small diameter AGR pipeline utilizes socket-and-spigot adhesive joints, offering high bonding strength, exceeding four times that of standard plastic piping; the adhesive cures rapidly, requiring only 30 seconds. Large diameter pipelines employ elastic seal socket-and-spigot connections, eliminating the need for complex and expensive construction equipment. Simple chamfering tools, cutters, and tensioners are sufficient for installation, making the process extremely straightforward. Moreover, the comprehensive range of AGR pipeline accessories ensures low-cost, quick, and convenient installation and construction.
