Shanxi customers Zhang Q: Coal steel mesh skeleton of polyethylene pipe requirements to be met, what specific criteria? Jinling technical director Kou tube industry workers to answer your questions: Mining steel mesh skeleton of polyethylene pipe requirements are the following aspects: 8, falling dart impact performance when tested in accordance with the provisions of the pipe 7.8, 10 samples 9 It should be free of cracks and damage. Hydraulic Performance 9 9.1 Short-term hydrostatic strength performance test temperature is 20 ℃, gas common pipe (KMQ) 1h dwell at the test pressure 1.6 × 2 times the nominal, stainless steel composite tube, pipe should not broken, do not leak; liquid Universal tube (KML) at a test pressure of 2 times the nominal dwell 1h, the pipe should not be broken, do not leak. 9.2 burst pressure performance test temperature is 20 ℃, gas common pipe (KMQ) at a test pressure of 3.3 × 1.6 times the nominal, composite pipe, the pipe should not blow up; liquid universal pipe (KML) test at 3 times the nominal pressure , the pipe should not burst. 9.3 resist negative pressure test according AQ1071-2009 requirements (pressure duct (KF) with liquid universal tube (KML) does not require this). Coal steel mesh skeleton polyethylene pipe selection is mainly considered environment, temperature, terrain, pressure and direction. To consider when installing the pipe to the bracket, steel skeleton of plastic composite pipes, to ensure the safe operation of the pipeline. Be sure to correct selection, installation meet the requirements. Jinling tube industry professionals Tips must choose the regular manufacturers of piping, quality and security, I Jinling Industry Technical Services from selection to installation to provide full free technical advice. Shanxi customers Zhang Q: Coal steel mesh skeleton of polyethylene pipe requirements to be met, what specific criteria? Jinling technical director Kou tube industry workers to answer your questions: Mining steel mesh skeleton of polyethylene pipe requirements are the following aspects: 8, falling dart impact performance when tested in accordance with the provisions of the pipe 7.8, 10 samples 9 It should be free of cracks and damage. Hydraulic Performance 9 9.1 Short-term hydrostatic strength performance test temperature is 20 ℃, gas common pipe (KMQ) 1h dwell at the test pressure 1.6 × 2 times the nominal, composite pipe, the pipe should not be broken, do not leak; liquid Universal tube (KML) at a test pressure of 2 times the nominal dwell 1h, the pipe should not be broken, do not leak. 9.2 burst pressure performance test temperature is 20 ℃, gas common pipe (KMQ) at a test pressure of 3.3 × 1.6 times the nominal pressure, the pipe should not blow up; liquid universal pipe (KML) at 3 times the nominal test pressure, pipe should not blasting. 9.3 resist negative pressure test according AQ1071-2009 requirements (pressure duct (KF) with liquid universal tube (KML) does not require this). Composite pipe, Jinling tube industry, stainless steel composite pipe provided by the Hebei Golden Link Industry Co., Ltd. Composite pipe, Jinling tube industry, stainless steel composite pipe Hebei Jinling Industry Co. (www.hbjinlingpipes.com/) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Li.