How to control the specific friction in duct drawing? How is the wind speed determined? Person in charge: look at this specification
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The pipeline system of. There are two kinds of air ducts: compound air duct and inorganic air duct. Ducts can be classified by section shape and material. The production of stainless steel air duct is to apply sealant (such as neutral glass glue) to the seam, rivet seam, flange flange flange four corners, etc. Before applying sealant, the dust and oil stain on the surface shall be removed. According to the section shape, the air duct can be divided into circular air duct, rectangular air duct, flat circular air duct and so on. Among them, the height dimension with the smallest resistance of circular air duct is the largest and the fabrication is complex. Therefore, rectangular duct is the main application. According to the material, the air duct can be divided into metal air duct, composite air duct and polymer air duct. "; t? E (T,! 0): e (" is a piping system for air delivery and distribution. There are two kinds of air ducts: compound air duct and inorganic air duct. Ducts can be classified by section shape and material. The production of stainless steel air duct is to apply sealant (such as neutral glass glue) to the seam, rivet seam, flange flange flange four corners, etc. Before applying sealant, the dust and oil stain on the surface shall be removed. According to the section shape, the air duct can be divided into circular air duct, rectangular air duct, flat circular air duct and so on. Among them, the height dimension with the smallest resistance of circular air duct is the largest and the fabrication is complex. Therefore, rectangular duct is the main application. According to the material, the air duct can be divided into metal air duct, composite air duct and polymer air duct. "); } }(function(e,t){ function a(e,t){ var a=e.match(new RegExp(t+"\\s*=\\s*[\"']?([^\"'\\s>]+)[\"']?")); return a&&a[1]; } function n(e){ e=e.split(/(]*>)(.*?)()/); for(var t,n=0;ni.offsetHeight+1){ var e=document.getElementById("js_folder_text_switch"),t=parseFloat(getComputedStyle(o).fontSize,10); e.style.display="block", e.setAttribute("data-height",o.offsetHeight/(t||16)); } },300)); });