常(chang)州(zhou)正久暖通設備(bei)工程有限公司從(cong)事常(chang)州(zhou)鎂(mei)質(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)加工安裝，常(chang)州(zhou)鋼面鎂(mei)質(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)，常(chang)州(zhou)鎂(mei)質(zhi)防火風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)，常(chang)州(zhou)鎂(mei)質(zhi)高晶風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)，以及白鐵(tie)通風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)道，不銹(xiu)鋼鍍(du)鋅風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)加工，風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)配件加工，常(chang)州(zhou)武進區鎂(mei)質(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)，自己有施工團隊和大型精密風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)生產(chan)設備(bei)多臺。歡迎咨詢參觀！

矩形風(feng)管(guan)(guan)(guan)(guan)(guan)的彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)、三(san)通、異徑(jing)管(guan)(guan)(guan)(guan)(guan)及(ji)來回彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)等(deng)配件所用材料厚度(du)(du)、連接方法及(ji)制作要求(qiu)應(ying)(ying)(ying)符合(he)風(feng)管(guan)(guan)(guan)(guan)(guan)制作的相(xiang)(xiang)應(ying)(ying)(ying)規定(ding)。     形彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)按圖3.10.2-1所示分內(nei)(nei)外同(tong)心弧(hu)型(xing)、內(nei)(nei)弧(hu)外直角型(xing)、內(nei)(nei)斜線外直角型(xing)及(ji)內(nei)(nei)外直角型(xing)，其制作應(ying)(ying)(ying)符合(he)下(xia)列要求(qiu)：1.矩形彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)宜(yi)采用內(nei)(nei)外同(tong)心弧(hu)型(xing)。彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)曲率半徑(jing)宜(yi)為一(yi)個(ge)平面邊(bian)(bian)(bian)長(chang)(chang)，圓弧(hu)應(ying)(ying)(ying)均勻(yun)。2. 矩形內(nei)(nei)外弧(hu)型(xing)彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)平面邊(bian)(bian)(bian)長(chang)(chang)大于(yu)500mm，且內(nei)(nei)弧(hu)半徑(jing)(r)與彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)平面邊(bian)(bian)(bian)長(chang)(chang)(a)之比(bi)（r/a） 小于(yu)或等(deng)于(yu)0.25時(shi)應(ying)(ying)(ying)設置導流片(pian)。導流片(pian)弧(hu)度(du)(du)應(ying)(ying)(ying)與彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)弧(hu)度(du)(du)相(xiang)(xiang)等(deng)，迎風(feng)邊(bian)(bian)(bian)緣應(ying)(ying)(ying)光滑，片(pian)數及(ji)設置位置應(ying)(ying)(ying)按表3.10.2-1及(ji)表3.10.2-2的規定(ding)。

常州(zhou)(zhou)(zhou)正(zheng)久(jiu)暖通(tong)設(she)備工(gong)(gong)程有限公(gong)司從事常州(zhou)(zhou)(zhou)鎂(mei)質(zhi)(zhi)(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)加(jia)工(gong)(gong)安裝，常州(zhou)(zhou)(zhou)鋼面鎂(mei)質(zhi)(zhi)(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)，常州(zhou)(zhou)(zhou)鎂(mei)質(zhi)(zhi)(zhi)防火風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)，鎂(mei)質(zhi)(zhi)(zhi)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)加(jia)工(gong)(gong)安裝，常州(zhou)(zhou)(zhou)鎂(mei)質(zhi)(zhi)(zhi)高晶風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)，以及白鐵(tie)通(tong)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)道，不銹(xiu)鋼鍍(du)鋅風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)加(jia)工(gong)(gong)，風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)配件(jian)加(jia)工(gong)(gong)，自己有施工(gong)(gong)團隊和(he)大型(xing)精密風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)生產(chan)設(she)備多臺。歡(huan)迎咨詢參觀！

對消(xiao)聲設備制作與安裝的要(yao)求進行檢查

消(xiao)聲(sheng)器(qi)所選用的材料，其(qi)防(fang)(fang)火、防(fang)(fang)腐(fu)、防(fang)(fang)潮和衛生(sheng)等應符合(he)設計(ji)要(yao)求。消(xiao)聲(sheng)器(qi)框架(jia)須(xu)牢固(gu)，共振(zhen)(zhen)腔的隔板尺(chi)(chi)寸正確(que)，隔板與壁板結(jie)合(he)處貼緊(jin)，外殼嚴(yan)密無漏。散狀充填的消(xiao)聲(sheng)材料，按規(gui)定的密度鋪設均勻，有防(fang)(fang)止下(xia)沉的措施；消(xiao)聲(sheng)片單(dan)(dan)體安裝(zhuang)后，固(gu)端(duan)須(xu)牢固(gu)，片距均勻；消(xiao)聲(sheng)器(qi)安裝(zhuang)方向須(xu)正確(que)，并單(dan)(dan)獨(du)設置支（吊）架(jia)；風管與消(xiao)聲(sheng)器(qi)組(zu)對(dui)時(shi)不(bu)得強(qiang)迫對(dui)口。減振(zhen)(zhen)器(qi)的型(xing)號、規(gui)格須(xu)符合(he)設計(ji)要(yao)求。風機減振(zhen)(zhen)臺座制作(zuo)鋼(gang)支架(jia)尺(chi)(chi)寸準確(que)，焊接(jie)牢固(gu)，焊縫均勻，飽滿(man)，鎂質風管訂(ding)做，其(qi)高度不(bu)大于(yu)5mm。減振(zhen)(zhen)器(qi)安裝(zhuang)應位(wei)置準確(que)，固(gu)定可靠。

常州(zhou)(zhou)正(zheng)久暖通設備(bei)工程(cheng)有(you)限(xian)公司從事常州(zhou)(zhou)鎂(mei)質(zhi)(zhi)風(feng)(feng)(feng)管(guan)(guan)(guan)加工安(an)裝，常州(zhou)(zhou)鋼面鎂(mei)質(zhi)(zhi)風(feng)(feng)(feng)管(guan)(guan)(guan)，常州(zhou)(zhou)鎂(mei)質(zhi)(zhi)防(fang)火(huo)風(feng)(feng)(feng)管(guan)(guan)(guan)，常州(zhou)(zhou)鎂(mei)質(zhi)(zhi)高晶風(feng)(feng)(feng)管(guan)(guan)(guan)，以及白鐵通風(feng)(feng)(feng)管(guan)(guan)(guan)道，不銹鋼鍍鋅風(feng)(feng)(feng)管(guan)(guan)(guan)加工，鎂(mei)質(zhi)(zhi)風(feng)(feng)(feng)管(guan)(guan)(guan)加工，風(feng)(feng)(feng)管(guan)(guan)(guan)配(pei)件加工，自己有(you)施工團(tuan)隊和大(da)型(xing)精密(mi)風(feng)(feng)(feng)管(guan)(guan)(guan)生產設備(bei)多臺。歡迎咨(zi)詢參觀！

由于在禁用(yong)鍍鋅鋼管(guan)后，國(guo)家沒有(you)(you)明確規定替代性(xing)的(de)產(chan)品，再(zai)有(you)(you)受(shou)(shou)經濟能(neng)力的(de)局限(xian)，以PP-R（無(wu)規共(gong)聚聚乙烯(xi)）為代表的(de)塑料(liao)(liao)(liao)(liao)管(guan)暫時(shi)性(xing)的(de)主導(dao)了(le)給水(shui)管(guan)道市(shi)(shi)(shi)場。PP-R管(guan)相對(dui)鍍鋅鋼管(guan)具(ju)有(you)(you)耐腐蝕、環保、使(shi)用(yong)時(shi)間長等(deng)優(you)點，因此一段時(shi)間以來(lai)得到(dao)了(le)快速的(de)發展。但塑料(liao)(liao)(liao)(liao)管(guan)道本身無(wu)法回(hui)避的(de)缺點在使(shi)用(yong)當中也同時(shi)暴露了(le)出(chu)來(lai)，主要的(de)問題是受(shou)(shou)熱(re)變(bian)形嚴重、冷(leng)(leng)痕裂。受(shou)(shou)陽光照(zhao)射或冷(leng)(leng)熱(re)變(bian)化老化加(jia)快、燒等(deng)。由于我國(guo)市(shi)(shi)(shi)場發展的(de)還不夠規范，塑料(liao)(liao)(liao)(liao)管(guan)材(cai)生產(chan)企業的(de)投(tou)資(zi)門檻(jian)從(cong)幾(ji)十(shi)萬到(dao)數億元(yuan)，生產(chan)廠(chang)家泛濫，無(wu)序競爭嚴重。小企業為降低生產(chan)成本，搶占市(shi)(shi)(shi)場，在生產(chan)過程中偷工減料(liao)(liao)(liao)(liao)，劣質產(chan)品充斥市(shi)(shi)(shi)場。受(shou)(shou)此影響，PP-R管(guan)的(de)進一步推廣受(shou)(shou)到(dao)了(le)很大的(de)制約。經過四年的(de)發展，現在有(you)(you)幾(ji)家過億投(tou)資(zi)的(de)大企業生存發展。