產品特(te)點(dian)：共板式法(fa)(fa)(fa)蘭風(feng)(feng)管(guan)(guan)又稱無法(fa)(fa)(fa)蘭風(feng)(feng)管(guan)(guan)，其制(zhi)作形(xing)式比傳統(tong)(tong)的(de)矩形(xing)風(feng)(feng)管(guan)(guan)加工速(su)度(du)更快(kuai)捷、更方便、更小(xiao)的(de)漏(lou)風(feng)(feng)率。其好處是節省材(cai)料，減(jian)少工程投資(zi);漏(lou)風(feng)(feng)量(liang)小(xiao)，降低能(neng)耗，節省運行(xing)費用(yong)(yong)(yong)，頗(po)受施工企業歡迎。 共板法(fa)(fa)(fa)蘭主要(yao)由角碼、法(fa)(fa)(fa)蘭夾，及(ji)與風(feng)(feng)管(guan)(guan)一(yi)體相連的(de)法(fa)(fa)(fa)蘭連接，這種形(xing)式風(feng)(feng)管(guan)(guan)雖(sui)然造價較(jiao)低(減(jian)少了角鋼(gang)用(yong)(yong)(yong)量(liang)，減(jian)少了制(zhi)作角鋼(gang)法(fa)(fa)(fa)蘭的(de)人工用(yong)(yong)(yong)量(liang))，但是實際應用(yong)(yong)(yong)起來不(bu)如角鋼(gang)法(fa)(fa)(fa)蘭牢固，且必須通(tong)過機床進行(xing)加工，手工制(zhi)作幾乎不(bu)能(neng)實現它的(de)制(zhi)作，通(tong)常(chang)只(zhi)應用(yong)(yong)(yong)于新風(feng)(feng)系統(tong)(tong)，空調系統(tong)(tong)等，排煙系統(tong)(tong)還是經(jing)常(chang)用(yong)(yong)(yong)角鋼(gang)法(fa)(fa)(fa)蘭連接的(de)風(feng)(feng)管(guan)(guan)。但是人防工程是不(bu)允許用(yong)(yong)(yong)共板法(fa)(fa)(fa)蘭連接。