{"id":4482,"date":"2025-08-16T11:10:47","date_gmt":"2025-08-16T04:10:47","guid":{"rendered":"https:\/\/onggiosaoviet.vn\/?post_type=product&p=4482"},"modified":"2026-05-04T23:01:00","modified_gmt":"2026-05-04T16:01:00","slug":"ong-gio-vuong-chu-nhat","status":"publish","type":"product","link":"https:\/\/onggiosaoviet.vn\/en\/product\/ong-gio-vuong-chu-nhat\/","title":{"rendered":"Square \/ rectangular duct"},"content":{"rendered":"
    \n
  1. Uses<\/strong><\/li>\n<\/ol>\n
      \n
    • Air conduction and distribution in the system HVAC<\/strong>: cold air supply, fresh air, return air, exhaust air.<\/li>\n
    • Application in the system ventilation \u2013 air conditioning \u2013 smoke extraction fire protection<\/strong> for high-rise buildings, commercial centers, industrial factories.<\/li>\n
    • Priority is given to use when installation space is limited in height, or pipes need to be arranged close to the ceiling or along the wall.<\/li>\n<\/ul>\n
        \n
      1. Material<\/strong><\/li>\n<\/ol>\n
          \n
        • Galvanized steel Z080<\/strong> (Hoa Sen \/ Hoa Phat) \u2013 anti-corrosion, high durability.<\/li>\n
        • Standard thickness (according to pipe size and wind pressure):\n
            \n
          • 0.48 mm \u2013 0.58 mm for small size, low pressure.<\/li>\n
          • 0.75 mm \u2013 0.95 mm for medium size, medium pressure.<\/li>\n
          • 1.15mm for large size, high pressure.<\/li>\n<\/ul>\n<\/li>\n
          • Options: Stainless steel 304\/201<\/strong> or powder coated steel for special environments.<\/li>\n<\/ul>\n
              \n
            1. Specifications \u2013 Dimensions<\/strong><\/li>\n<\/ol>\n
                \n
              • Cross-sectional size: W \u00d7 H<\/strong> according to design drawings.<\/li>\n
              • Standard length of each section: 1100mm for 1200mm sheet metal (optimal transportation and installation).<\/li>\n
              • Shape: square or rectangular, can have rounded corners as required.<\/li>\n<\/ul>\n
                  \n
                1. Structure & Machining<\/strong><\/li>\n<\/ol>\n
                    \n
                  • Pittsburgh seaming, lamination or gas-sealing to SMACNA\/DW144.<\/li>\n
                  • Two end pipe attachment TDC\/TDF flange<\/strong> or Slip & Drive<\/strong> for easy assembly at site.<\/li>\n
                  • Reinforced stiffeners along the pipe wall to prevent vibration and distortion.<\/li>\n
                  • The joints are sealed with airtight glue or fitted with EPDM rubber gaskets.<\/li>\n<\/ul>\n
                      \n
                    1. Application<\/strong><\/li>\n<\/ol>\n
                        \n
                      • High-rise building<\/strong>: shopping center, office, apartment.<\/li>\n
                      • Industrial factory<\/strong>: garment factory, processing factory, warehouse.<\/li>\n
                      • Special project<\/strong>: hospital, school, gymnasium.<\/li>\n<\/ul>\n
                          \n
                        1. Advantage<\/strong><\/li>\n<\/ol>\n
                            \n
                          • Large air flow<\/strong> for the same cross section as a circular tube in low space.<\/li>\n
                          • Tight, secure<\/strong>, anti-air leakage, reduce pressure loss.<\/li>\n
                          • Flexible installation<\/strong> with many types of flanges and matching accessories.<\/li>\n
                          • Custom processing<\/strong> Dimensions, materials, fire resistance standards (EI30\/60\/120).<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

                            C\u00f4ng d\u1ee5ng D\u1eabn v\u00e0 ph\u00e2n ph\u1ed1i kh\u00f4ng kh\u00ed trong h\u1ec7 th\u1ed1ng HVAC: c\u1ea5p gi\u00f3 l\u1ea1nh, gi\u00f3 t\u01b0\u01a1i, gi\u00f3 h\u1ed3i, gi\u00f3 th\u1ea3i. \u1ee8ng d\u1ee5ng trong h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 \u2013 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed \u2013 h\u00fat kh\u00f3i PCCC cho nh\u00e0 cao t\u1ea7ng, trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i, nh\u00e0 x\u01b0\u1edfng c\u00f4ng nghi\u1ec7p. \u01afu ti\u00ean s\u1eed d\u1ee5ng khi kh\u00f4ng […]<\/p>","protected":false},"featured_media":4755,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[18,23],"product_tag":[],"class_list":{"0":"post-4482","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-all","7":"product_cat-ong-gio-vuong","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product\/4482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/comments?post=4482"}],"version-history":[{"count":2,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product\/4482\/revisions"}],"predecessor-version":[{"id":4862,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product\/4482\/revisions\/4862"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/media\/4755"}],"wp:attachment":[{"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/media?parent=4482"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product_brand?post=4482"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product_cat?post=4482"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/onggiosaoviet.vn\/en\/wp-json\/wp\/v2\/product_tag?post=4482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}