我們應該知道(dao)異型(xing)鋼(gang)(gang)的(de)(de)鋼(gang)(gang)管(guan)滲(shen)碳可以提高鋼(gang)(gang)管(guan)的(de)(de)HRC硬度。螺(luo)旋鋼(gang)(gang)管(guan)以帶(dai)鋼(gang)(gang)卷板為原(yuan)材料，經常溫擠(ji)壓成(cheng)型(xing)，以自動雙(shuang)絲(si)雙(shuang)面埋(mai)弧焊(han)工藝焊(han)接而成(cheng)的(de)(de)螺(luo)旋縫鋼(gang)(gang)管(guan)。 采用先進的(de)(de)雙(shuang)面埋(mai)弧焊(han)的(de)(de)工藝，可在最佳(jia)位置實現(xian)焊(han)接，不易出(chu)現(xian)錯邊、焊(han)偏和未焊(han)透等缺陷，容易控(kong)制焊(han)接質量。滲(shen)碳是一種對異型(xing)鋼(gang)(gang)管(guan)進行表面處理(li)的(de)(de)方法。

特別是疫(yi)情期間，全球(qiu)人民共同見證了武漢火(huo)神山(shan)、雷神山(shan)醫(yi)院的(de)建造速度。作(zuo)為(wei)面對新型冠狀(zhuang)病毒(du)而臨時(shi)(shi)搭建的(de)醫(yi)院，火(huo)神山(shan)、雷神山(shan)醫(yi)院以(yi)輕鋼結構(gou)作(zuo)為(wei)主體，采用(yong)(yong)鋼結構(gou)箱式房裝(zhuang)配化(hua)(hua)施工(gong)方式，由于兩座(zuo)醫(yi)院均采用(yong)(yong)標準化(hua)(hua)、模塊化(hua)(hua)設計，最大限(xian)度地采用(yong)(yong)成熟的(de)拼裝(zhuang)式工(gong)業化(hua)(hua)成品(pin)，大幅減(jian)少現場作(zuo)業工(gong)作(zuo)量(liang)，實(shi)現了效率(lv)最大化(hua)(hua)，如(ru)火(huo)神山(shan)醫(yi)院在(zai)開工(gong)第4天就可進行安裝(zhuang)，從(cong)開工(gong)到交付歷(li)時(shi)(shi)僅約10天左右。

異型(xing)(xing)鋼(gang)(gang)(gang)的(de)機加(jia)(jia)工用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)(guan)也可(ke)以說是厚(hou)(hou)壁無(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)，機加(jia)(jia)工用(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)(guan)可(ke)以分(fen)為(wei)大(da)口徑(jing)無(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)合小(xiao)口徑(jing)無(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)，輸送用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；鍋爐(lu)用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；鍋爐(lu)用(yong)(yong)(yong)高(gao)(gao)壓無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；化肥設備(bei)用(yong)(yong)(yong)高(gao)(gao)壓無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；地質磚探用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；石油磚探用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；石油裂化用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；船舶用(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；冷拔冷軋精密無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)；各種合金管(guan)(guan)(guan)(guan)(guan)(guan)。按鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)截面(mian)形狀(zhuang)尺寸的(de)不同又可(ke)分(fen)為(wei)等壁厚(hou)(hou)異型(xing)(xing)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、不等壁厚(hou)(hou)異型(xing)(xing)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)、變(bian)直徑(jing)異型(xing)(xing)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)。異型(xing)(xing)鋼(gang)(gang)(gang)的(de)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)廣泛用(yong)(yong)(yong)于各種結(jie)構件、工具和機械零部(bu)件。和圓管(guan)(guan)(guan)(guan)(guan)(guan)相(xiang)比，異型(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)一般都有(you)較大(da)的(de)慣性矩和截面(mian)模數，有(you)較大(da)的(de)抗彎抗扭(niu)能(neng)力，可(ke)以大(da)大(da)減輕結(jie)構重量(liang)，節(jie)約(yue)鋼(gang)(gang)(gang)材(cai)。