27simn鋼管是一種截面較輕的中空27simn鋼管。薄壁鋼管又稱冷彎型鋼。它要用Q235熱扎或冷扎的。帶鋼或是，冷軋板指通過冷彎、成型和高頻焊接而成的方形截面的形狀和規格。熱扎大昌厚壁27simn鋼管除厚度提升外，角部規格及邊沿平面度均達到甚至超過電阻焊冷成型27simn鋼管的水準。具有較好的機械性能、焊接性、冷拉、熱處理和耐腐蝕性，低溫韌性好。

　　2.27simn鋼管應用

　　27simn鋼(gang)管用以建(jian)筑、機械制造、鋼(gang)結(jie)構(gou)(gou)等工(gong)程、造船、太陽能(neng)支架(jia)、鋼(gang)材等。結(jie)構(gou)(gou)工(gong)程電力(li)力(li)工(gong)程電力(li)廠，農業和化學機械，幕墻玻璃，底盤，機場,鍋(guo)爐修(xiu)建(jian)，高速路護欄，房屋建(jian)筑，壓力(li)容器(qi)，石油儲罐，橋梁電力(li)站設備，起重運輸機械及(ji)其它(ta)較高負載的焊接(jie)結(jie)構(gou)(gou)件等。

　　27simn鋼(gang)(gang)(gang)管(guan)(guan)的(de)規(gui)格可(ke)用腰(yao)(yao)(yao)高(gao)(gao)(h)*腿(tui)寬(kuan)(b)*腰(yao)(yao)(yao)厚(d)表(biao)(biao)明(ming)，如(ru)“工(gong)(gong)(gong)(gong)(gong)(gong)200*100*7”，即(ji)表(biao)(biao)明(ming)腰(yao)(yao)(yao)高(gao)(gao)為(wei)(wei)(wei)200mm，腿(tui)寬(kuan)為(wei)(wei)(wei)100mm，腰(yao)(yao)(yao)厚為(wei)(wei)(wei)7mm工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)的(de)規(gui)格還(huan)可(ke)用型(xing)(xing)(xing)(xing)(xing)號表(biao)(biao)明(ming)，型(xing)(xing)(xing)(xing)(xing)號表(biao)(biao)明(ming)腰(yao)(yao)(yao)強的(de)厘米數(shu)，如(ru)工(gong)(gong)(gong)(gong)(gong)(gong)20#。腰(yao)(yao)(yao)高(gao)(gao)同(tong)樣的(de)27simn鋼(gang)(gang)(gang)管(guan)(guan)，如(ru)有幾種不同(tong)的(de)腿(tui)寬(kuan)和腰(yao)(yao)(yao)厚，需在(zai)型(xing)(xing)(xing)(xing)(xing)號右側(ce)加abc給予差別(bie)，如(ru)20#a、20#b、20#c等。工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)20#a200*100*7;27simn鋼(gang)(gang)(gang)管(guan)(guan)20#b200*102*927simn鋼(gang)(gang)(gang)管(guan)(guan)又(you)(you)稱(cheng)為(wei)(wei)(wei)鋼(gang)(gang)(gang)柱(英文名字(zi)(zi)UniversalBeam)，是截面為(wei)(wei)(wei)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)形狀(zhuang)的(de)條形鋼(gang)(gang)(gang)材。27simn鋼(gang)(gang)(gang)管(guan)(guan)分(fen)普通工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)和輕(qing)型(xing)(xing)(xing)(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)鋼(gang)(gang)(gang)。是截面形狀(zhuang)為(wei)(wei)(wei)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)型(xing)(xing)(xing)(xing)(xing)的(de)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)。工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)主(zhu)要分(fen)為(wei)(wei)(wei)一般工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)、輕(qing)型(xing)(xing)(xing)(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)鋼(gang)(gang)(gang)和寬(kuan)翼(yi)緣工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)。按翼(yi)緣與(yu)腹(fu)板高(gao)(gao)度(du)比又(you)(you)分(fen)為(wei)(wei)(wei)寬(kuan)幅(fu)、中幅(fu)、窄(zhai)幅(fu)寬(kuan)翼(yi)緣工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)。前二(er)者制造的(de)規(gui)格為(wei)(wei)(wei)10—60號，即(ji)對應的(de)高(gao)(gao)度(du)為(wei)(wei)(wei)10cm—60cm。在(zai)相(xiang)同(tong)高(gao)(gao)度(du)下(xia)，輕(qing)型(xing)(xing)(xing)(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)鋼(gang)(gang)(gang)翼(yi)緣窄(zhai)、梁端薄、重量(liang)輕(qing)。寬(kuan)翼(yi)緣工(gong)(gong)(gong)(gong)(gong)(gong)型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)又(you)(you)稱(cheng)H型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)，斷面特征是兩(liang)腿(tui)平行，且(qie)腿(tui)內側(ce)沒有斜度(du)。是屬于經濟斷面型(xing)(xing)(xing)(xing)(xing)鋼(gang)(gang)(gang)，要在(zai)四輥全能軋機上冷軋的(de)，因(yin)此又(you)(you)稱(cheng)“全能27simn鋼(gang)(gang)(gang)管(guan)(guan)”。一般27simn鋼(gang)(gang)(gang)管(guan)(guan)、輕(qing)型(xing)(xing)(xing)(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)鋼(gang)(gang)(gang)已(yi)經形成(cheng)規(gui)范。鍍鋅(xin)(xin)管(guan)(guan)分(fen)熱(re)鍍鋅(xin)(xin)和電鍍鋅(xin)(xin)兩(liang)種，熱(re)鍍鋅(xin)(xin)鍍鋅(xin)(xin)層(ceng)(ceng)厚，具(ju)備涂層(ceng)(ceng)勻稱(cheng)，附著力強，堅固耐用等優(you)點。電鍍鋅(xin)(xin)成(cheng)本低，表(biao)(biao)層(ceng)(ceng)不太光滑(hua)，其自身的(de)耐腐蝕性比熱(re)鍍鋅(xin)(xin)管(guan)(guan)相(xiang)差許(xu)多。

　　為提升(sheng)27simn鋼管(guan)的(de)耐腐蝕性能，對一般鋼管(guan)開展(zhan)鍍(du)鋅(xin)(xin)。27simn鋼管(guan)分(fen)熱鍍(du)鋅(xin)(xin)和電鍍(du)鋅(xin)(xin)兩種，熱鍍(du)鋅(xin)(xin)鍍(du)鋅(xin)(xin)層厚(hou)，電鍍(du)鋅(xin)(xin)成本低(di)，表層不太(tai)光滑。

　　舊房子(zi)大(da)部分用的(de)都是(shi)鍍鋅管(guan)(guan)，如(ru)今煤氣、暖氣用的(de)那(nei)種(zhong)鐵管(guan)(guan)也是(shi)鍍鋅管(guan)(guan)，27simn鋼管(guan)(guan)做(zuo)為水(shui)管(guan)(guan)，應用幾年后，管(guan)(guan)中產生大(da)量銹垢，流出的(de)黃水(shui)不僅污染潔(jie)具，并且摻雜著不光滑內壁滋生的(de)病菌，生銹導致水(shui)中重(zhong)金屬含量太高，嚴重(zhong)危害(hai)人體健(jian)康。