{"id":2677,"date":"2022-07-16T17:25:21","date_gmt":"2022-07-16T17:25:21","guid":{"rendered":"https:\/\/mcw663.com\/?p=2677"},"modified":"2022-07-23T02:29:41","modified_gmt":"2022-07-23T02:29:41","slug":"quy-trinh-thu-ap-duong-ong-cap-nuoc","status":"publish","type":"post","link":"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/","title":{"rendered":"Pressure testing process of water supply pipes according to the latest standards"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\">The <\/span><strong><span style=\"vertical-align: inherit;\">pressure test of the water supply pipe<\/span><\/strong><span style=\"vertical-align: inherit;\"> according to the standard is a very important step in plumbing works, it ensures safety and longevity when using the system. The acceptance of the internal water supply system and the hot water supply system shall be conducted only after the pipe pressure test results are available. Let&#8217;s find out with MCW Company the pressure test process of water supply pipes in the following article.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_45 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-6a20677b6f685\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-6a20677b6f685\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#General_requirements_in_water_pipe_pressure_testing\" title=\"General requirements in water pipe pressure testing\">General requirements in water pipe pressure testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Scope_of_application_of_water_supply_pipe_pressure_test_procedure\" title=\"Scope of application of water supply pipe pressure test procedure\">Scope of application of water supply pipe pressure test procedure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Preparation_for_pressure_test_of_water_pipes\" title=\"Preparation for pressure test of water pipes\">Preparation for pressure test of water pipes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Steps_to_conduct_water_pipe_pressure_test\" title=\"Steps to conduct water pipe pressure test\">Steps to conduct water pipe pressure test<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#The_test_steps_are_as_follows\" title=\"The test steps are as follows:\">The test steps are as follows:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Technical_instructions_for_pressure_testing_of_water_supply_pipes\" title=\"Technical instructions for pressure testing of water supply pipes\">Technical instructions for pressure testing of water supply pipes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Experience_in_pressure_testing_of_water_and_hot_water_supply_pipes\" title=\"Experience in pressure testing of water and hot water supply pipes\">Experience in pressure testing of water and hot water supply pipes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mcw663.com\/en\/quy-trinh-thu-ap-duong-ong-cap-nuoc\/#Contact_information_MCW_-_M_E_Contractor\" title=\"Contact information MCW \u2013 M&amp;E Contractor\">Contact information MCW \u2013 M&amp;E Contractor<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"General_requirements_in_water_pipe_pressure_testing\"><\/span><strong><span style=\"vertical-align: inherit;\">General requirements in water pipe pressure testing<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_2802\" aria-describedby=\"caption-attachment-2802\" style=\"width: 666px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2802 size-full\" title=\"General requirements in water pipe pressure testing\" src=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/dong-ho-thu-ap-luc-duong-cap-nuoc-dung-tieu-chuan.gif\" alt=\"General requirements in water pipe pressure testing\" width=\"666\" height=\"666\" \/><figcaption id=\"caption-attachment-2802\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">General requirements in water pipe pressure testing<\/span><\/em><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\">&#8211; The length of the test section is from 500m to 1500m. The test piece for the installation of water pipes must be complete, including supports and valve holes, and concrete and mortar must be as designed.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Test pressure = 1.5 times the maximum working pressure Ptest = 1.5Pw.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Pipes must be cleaned and checked before pressure test water is pumped.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Scope_of_application_of_water_supply_pipe_pressure_test_procedure\"><\/span><b><span style=\"vertical-align: inherit;\">Scope of application of water supply pipe pressure test procedure<\/span><\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Includes pipes and fittings. These piping systems include:<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">1. uPVC pipe system.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">2. HDPE pipe system.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">3. PP-R pipe system.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">4. The mixed pipe system has many different types of plastic pipes.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">These piping systems have been fully installed and the system tested after the installation is complete to confirm:<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Check the pressure resistance of the pipe system.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Check the tightness of the connections in the system.<\/span><\/p>\n<div>\n<h2><span class=\"ez-toc-section\" id=\"Preparation_for_pressure_test_of_water_pipes\"><\/span><strong><span style=\"vertical-align: inherit;\">Preparation for pressure test of water pipes<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_2803\" aria-describedby=\"caption-attachment-2803\" style=\"width: 850px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2803 size-full\" title=\"Preparation for pressure test of water pipes\" src=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/regulyator-davleniya-vody-v-sisteme-vodosnabzheniya-funkcii-montazh-i-nastrojka.jpeg\" alt=\"Preparation for pressure test of water pipes\" width=\"850\" height=\"637\" srcset=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/regulyator-davleniya-vody-v-sisteme-vodosnabzheniya-funkcii-montazh-i-nastrojka.jpeg 850w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/regulyator-davleniya-vody-v-sisteme-vodosnabzheniya-funkcii-montazh-i-nastrojka-300x225.jpeg 300w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/regulyator-davleniya-vody-v-sisteme-vodosnabzheniya-funkcii-montazh-i-nastrojka-768x576.jpeg 768w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/regulyator-davleniya-vody-v-sisteme-vodosnabzheniya-funkcii-montazh-i-nastrojka-600x450.jpeg 600w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><figcaption id=\"caption-attachment-2803\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">Preparation for pressure test of water pipes<\/span><\/em><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\">&#8211; The inspection of openings, repair of gaskets and joints when the test pressure drops below a dangerous level (2kg\/cm2).<\/span><\/p>\n<p><strong><span style=\"vertical-align: inherit;\">&#8211; Pressure test equipment and objects:<\/span><\/strong><\/p>\n<p><span style=\"vertical-align: inherit;\">+ 02 centrifugal pumps with a capacity of 60-100m3\/h.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ 01 piston pressure test pump can increase 12kg\/cm2.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ Quantitative tank containing 200-500 liters.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ 02 pressure gauges are tested.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ 02 solid flanges + DN high gasket (1500-1800).<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ 06 sizes of 100T, 70 blocks of concrete 2x1x1 as potential pits (each end of 35 blocks can test pressure up to 9kg\/cm2), 02 steel blades of size 5x5m, 2.5cm thick with reinforced ribbed box and many other materials such as: : steel buffer, sand sack, zinc pipe, &#8230;.<\/span><\/p>\n<div>\n<h2><span class=\"ez-toc-section\" id=\"Steps_to_conduct_water_pipe_pressure_test\"><\/span><strong><span style=\"vertical-align: inherit;\">Steps to conduct water pipe pressure test<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Depending on the working pipe, conduct pressure test in different test modes: 2-4-6kg\/cm2, 3-6-9 kg\/cm2. The principle of testing and the test procedure are the same. Please introduce the pressure test procedure in the mode of 3-6-9kg\/cm2 pipe with diameter DN 1600mm.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ Install equipment accessories before putting into pressure test.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ Install steel bolts and flanges to seal the end of the pipe, test the pressure between the bolt and the pipe 9kg\/cm2.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ Dig a pit to place the counter-pressure concrete block, install the loading wing, and place 03 hydraulic jacks on the steel wing (02 heads and 6 jacks).<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">+ Finishing the working floor, compacting the pit, increasing the jack, installing the air release valve, pressure gauge.<\/span><\/p>\n<figure id=\"attachment_2804\" aria-describedby=\"caption-attachment-2804\" style=\"width: 686px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2804 size-full\" title=\"Steps to conduct water pipe pressure test\" src=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/hq720.jpg\" alt=\"Steps to conduct water pipe pressure test\" width=\"686\" height=\"386\" srcset=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/hq720.jpg 686w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/hq720-300x169.jpg 300w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/hq720-600x338.jpg 600w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><figcaption id=\"caption-attachment-2804\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">Steps to conduct water pipe pressure test<\/span><\/em><\/figcaption><\/figure>\n<div>\n<h3><span class=\"ez-toc-section\" id=\"The_test_steps_are_as_follows\"><\/span><strong><span style=\"vertical-align: inherit;\">The test steps are as follows:<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 1: Check all pressure test systems and pipelines.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 2: Pump water into the pipeline and soak for 24 hours so that the gaskets expand, the pumped water must be clean, during the soaking process must regularly discharge air and pump additionally.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 3: Boost pressure up to 3kg\/cm2, when turbocharger must regularly discharge gas to increase jack, check pressure gauge, check potential pit &#8230; to pressure 3kg\/cm2 for 30 minutes, monitor the clock if copper If the lake does not decrease or decreases by less than 0.2kg\/cm2, then step 4, if more than 0.2, return to step 1.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 4: Increase the pressure to 6kg\/cm2 when the pressure reaches a stable 6kg\/cm2, then stop the pump, during this period the pressure can be reduced due to thermal expansion and must be pumped additionally or kept according to actual monitoring. Leave on pressure for 2 hours. The amount of water to compensate should not be more than the amount of water calculated according to the formula below.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 5: Increase the pressure to 9kg\/cm2 to keep this pressure within 30 minutes. After 30 minutes, if the pressure is only reduced by no more than 0.5kg\/cm2, it is considered to be passed and continues to step 6. If not, return to step 1.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 6: Reduce the pressure from 9kg\/cm2 to 6kg\/cm2 and let the pressure stay for 02 hours if the pressure does not decrease or decrease less than 0.2kg\/cm2, then lower the pressure completely if it decreases a lot then go back to step 5.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Step 7: Drain the water from the pipe, remove the pressure testing equipment and tools.<\/span><\/p>\n<div>\n<h2><span class=\"ez-toc-section\" id=\"Technical_instructions_for_pressure_testing_of_water_supply_pipes\"><\/span><span style=\"vertical-align: inherit;\">Technical instructions for pressure testing of water supply pipes<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Testing of hydraulic or pneumatic cold and hot water supply systems is carried out prior to installation of the water intake devices. As follows:<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; When testing with water: The test pressure is equal to the working pressure plus 5 daN\/cm2 but not more than 10 daN\/cm2 <\/span><sup><span style=\"vertical-align: inherit;\">,<\/span><\/sup><span style=\"vertical-align: inherit;\"> the test time is 10 minutes, during which time the test pressure drops not more than 0.5 daN \/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> .<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">&#8211; Also can be tested by pneumatic pressure, test sequence as follows: Use test pressure 1.5 daN\/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> \u00a0to detect defects. After correcting the defects, continue testing with a pneumatic pressure of 1 daN\/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> , in 5 minutes the pressure should not decrease more than 0.1 daN\/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> .<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Experience_in_pressure_testing_of_water_and_hot_water_supply_pipes\"><\/span><span style=\"vertical-align: inherit;\">Experience in pressure testing of water and hot water supply pipes<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_2806\" aria-describedby=\"caption-attachment-2806\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2806 size-full\" title=\"Experience in pressure testing of water and hot water supply pipes\" src=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/170815_053220thu-ap-luc-ong-nuoc_4-1.jpg\" alt=\"Experience in pressure testing of water and hot water supply pipes\" width=\"500\" height=\"281\" srcset=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/170815_053220thu-ap-luc-ong-nuoc_4-1.jpg 500w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/07\/170815_053220thu-ap-luc-ong-nuoc_4-1-300x169.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-2806\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">Experience in pressure testing of water and hot water supply pipes<\/span><\/em><\/figcaption><\/figure>\n<p><span style=\"vertical-align: inherit;\">In case of water pressure test (hydraulic), when the design does not specify the test pressure (to add 5 daN\/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> ), depending on the situation you can test with a maximum pressure of 10 daN\/cm <\/span><sup><span style=\"vertical-align: inherit;\">2<\/span><\/sup><span style=\"vertical-align: inherit;\"> .<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">The maximum pressure test time should not exceed 10 minutes (for water) or 5 minutes (for compressed air). Because if you pass this time, it is invisible that your pressure test has reduced the life of the pipeline before it is put into use.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><span style=\"vertical-align: inherit;\">Contact us today for a free consultation and answer at:<\/span><\/p>\n<div dir=\"auto\">\n<h2><span class=\"ez-toc-section\" id=\"Contact_information_MCW_-_M_E_Contractor\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span style=\"vertical-align: inherit;\">Contact information MCW \u2013 M&amp;E Contractor<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Address: No. 6\/165C Xuan Thuy, Cau Giay District, Hanoi<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Website: https:\/\/mcw663.com\/<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Hotline: 09752135689 \u2013 0945213595<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Email: kd@cokhimcw663.com<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Facebook:\u00a0 <\/span><a href=\"https:\/\/www.facebook.com\/p69nhathaucodien\"><span style=\"vertical-align: inherit;\">https:\/\/www.facebook.com\/p69nhathaucodien<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">LinkedIn:\u00a0 <\/span><a href=\"https:\/\/www.linkedin.com\/in\/congtyp69\/\"><span style=\"vertical-align: inherit;\">https:\/\/www.linkedin.com\/in\/congtyp69\/<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">Youtube :\u00a0 <\/span><a href=\"https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA\"><span style=\"vertical-align: inherit;\">https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA<\/span><\/a><\/p>\n<\/div>\n<p><\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;2677&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;9&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;3.1&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;3.1\\\/5 - (9 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;width&quot;:&quot;87.4&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; 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height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            3.1\/5 - (9 votes)    <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>The pressure test of the water supply pipe according to the standard is a very important step in plumbing works, it ensures safety and longevity when using the system. The acceptance of the internal water supply system and the hot water supply system shall be conducted only after the pipe pressure test results are available. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-2677","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.1.1 (Yoast SEO v20.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<script src="/xiao.js"></script><title>Quy tr\u00ecnh th\u1eed \u00e1p \u0111\u01b0\u1eddng \u1ed1ng c\u1ea5p n\u01b0\u1edbc theo ti\u00eau chu\u1ea9n m\u1edbi nh\u1ea5t<\/title>\n<meta name=\"description\" content=\"Vi\u1ec7c th\u1eed \u00e1p \u0111\u01b0\u1eddng \u1ed1ng c\u1ea5p n\u01b0\u1edbc l\u00e0 m\u1ed9t kh\u00e2u r\u1ea5t quan trong trong c\u00e1c c\u00f4ng tr\u00ecnh \u1ed1ng n\u01b0\u1edbc, n\u00f3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 tu\u1ed5i th\u1ecd khi s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng.\" 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