Withstand pressure level of PE pipe
According to the national standard requirements of GB / T13663-2000, the pressure of PE pipe can be divided into six levels of 0.4MPa, 0.6MPa, 0.8MPa, 1.0MPa, 1.25MPa, 1.6MPa. Meaning: For example, 1.0MPa, that is to say, the normal working pressure of this type of PE pipe is 1.0MPa, which is what we often say 10kg pressure. Of course, in the previous compression test, according to national standards, it needs to be compressed 1.5 times. Hold the pressure for 24 hours, that is, test with 15 kg of water pressure.
Normal PE pipe pressure test is water pressure, no exhaust valve is needed, is the tube burst accurate pressure gauge, or is it pressed under high temperature conditions, all exclusion is the quality of the pipeline!
In addition, the tensile strength of PE pipe is not related to the wall thickness, and there is no calculation formula. 抗拉强度是受力后发生断裂时单位面积上承受的最大拉力。 The tensile strength of PE pipe is the maximum tensile force per unit area when fracture occurs after being stressed. PE管 的最大拉应力之后，会出现缩颈现象；对于没有均匀塑性变形的脆性材料，它反映了材料的断裂抗力。 Tensile strength is the resistance to the maximum uniform plastic deformation of the material. Before the tensile sample is subjected to the maximum tensile stress, the deformation is uniform, but after exceeding the maximum tensile stress of the PE pipe , necking will occur; for no uniform plasticity A deformed brittle material that reflects the material's resistance to fracture. The symbol is Rm (GB / T 228-1987 old national standard stipulates the tensile strength symbol is σb), and the unit is MPa.