無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)是如今(jin)(jin)很多以(yi)及制造業(ye)需(xu)要用到的(de)(de)(de)材(cai)料(liao),有很多種類(lei)型(xing),一(yi)般有Q345B無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)、20#無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)、16mn無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)和大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)等(deng)等(deng),今(jin)(jin)天,就給大(da)(da)(da)(da)家講解(jie)一(yi)下大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)的(de)(de)(de)知(zhi)識.　　大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)是指外(wai)徑(jing)(jing)(jing)159mm以(yi)上(shang)的(de)(de)(de)大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan),其(qi)重量計算公式(shi)為:[(外(wai)徑(jing)(jing)(jing)-壁(bi)厚(hou)(hou)(hou))*壁(bi)厚(hou)(hou)(hou)]*0.02466=kg/米(每米的(de)(de)(de)重量).　　大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)分為熱(re)(re)軋大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)和熱(re)(re)擴(kuo)大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan),熱(re)(re)軋大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)一(yi)般只可以(yi)國標(biao)規格的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan),熱(re)(re)擴(kuo)大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)則可以(yi)國標(biao)和非國標(biao)等(deng)特(te)殊(shu)型(xing)號(hao)的(de)(de)(de)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan).　　大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)zui大(da)(da)(da)(da)管(guan)(guan)(guan)(guan)口(kou)(kou)直徑(jing)(jing)(jing)達1200mm,而(er)且可以(yi)根據不同(tong)的(de)(de)(de)需(xu)要涂(tu)敷(fu)聚(ju)氯乙烯(xi)(PVC)、聚(ju)乙烯(xi)(PE)、環(huan)(huan)氧(yang)樹(shu)脂(EPOZY)等(deng)各種不同(tong)性能的(de)(de)(de)塑料(liao)涂(tu)層(ceng),所以(yi)也被稱之為涂(tu)敷(fu)鋼管(guan)(guan)(guan)(guan).　　大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)涂(tu)敷(fu)鋼管(guan)(guan)(guan)(guan)附(fu)著力好(hao),抗腐(fu)(fu)蝕性強(qiang),可耐(nai)強(qiang)酸、強(qiang)堿及其(qi)它化(hua)學腐(fu)(fu)蝕而(er)且無(wu)(wu)(wu)(wu)(wu)(wu)毒、不銹蝕、耐(nai)磨、耐(nai)沖擊(ji)、耐(nai)滲透(tou)性強(qiang),管(guan)(guan)(guan)(guan)道表(biao)面光(guang)滑,不粘附(fu)任何物質(zhi),能降低輸送(song)時的(de)(de)(de)阻力,提高(gao)流(liu)量及輸送(song)效(xiao)率,減少輸送(song)壓(ya)力損失.　　涂(tu)層(ceng)中無(wu)(wu)(wu)(wu)(wu)(wu)溶劑(ji),無(wu)(wu)(wu)(wu)(wu)(wu)可滲出(chu)物質(zhi),因而(er)不會污染所輸送(song)的(de)(de)(de)介質(zhi),從而(er)保(bao)證流(liu)體的(de)(de)(de)純潔度和衛(wei)生性,在-40℃到+80℃范(fan)圍可冷(leng)(leng)熱(re)(re)循環(huan)(huan)交替使(shi)用,不老化(hua)、不龜(gui)裂,因而(er)可以(yi)在寒冷(leng)(leng)地帶等(deng)苛刻的(de)(de)(de)環(huan)(huan)境下使(shi)用.　　正式(shi)以(yi)為以(yi)上(shang)優勢,所以(yi)大(da)(da)(da)(da)口(kou)(kou)徑(jing)(jing)(jing)厚(hou)(hou)(hou)壁(bi)無(wu)(wu)(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)(feng)管(guan)(guan)(guan)(guan)廣(guang)泛應用于自來水(shui)、天然氣、石油、化(hua)工、醫(yi)藥、通訊、電力、海洋(yang)等(deng)工程領域.