特點：

H型鋼的(de)(de)(de)翼緣內(nei)外側平行(xing)或接(jie)近于(yu)平行(xing)，翼緣端(duan)部(bu)呈直角，因此而得(de)名平行(xing)翼緣工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)。H型鋼(gang)(gang)(gang)的(de)(de)(de)腹(fu)板厚度(du)比(bi)腹(fu)板同(tong)(tong)(tong)樣(yang)高(gao)的(de)(de)(de)普通(tong)(tong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)小，翼緣寬(kuan)(kuan)度(du)比(bi)腹(fu)板同(tong)(tong)(tong)樣(yang)高(gao)的(de)(de)(de)普通(tong)(tong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)大(da)，因此又得(de)名寬(kuan)(kuan)緣工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)。由形狀所決定，H型鋼(gang)(gang)(gang)的(de)(de)(de)截面模數、慣(guan)性(xing)矩(ju)及相應(ying)的(de)(de)(de)強(qiang)度(du)均明(ming)顯優于(yu)同(tong)(tong)(tong)樣(yang)單重的(de)(de)(de)普通(tong)(tong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)。用在(zai)不同(tong)(tong)(tong)要求(qiu)的(de)(de)(de)金屬(shu)結構中，不論是(shi)承受彎曲力矩(ju)、壓力負荷、偏心負荷都顯示(shi)出它的(de)(de)(de)優越性(xing)能(neng)，可(ke)較(jiao)普通(tong)(tong)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)字鋼(gang)(gang)(gang)大(da)大(da)提(ti)高(gao)承載能(neng)力，節約金屬(shu)10%～40%。H型鋼(gang)(gang)(gang)的(de)(de)(de)翼緣寬(kuan)(kuan)、腹(fu)板薄、規格多、使用靈活，用于(yu)各種桁架(jia)結構中可(ke)節約金屬(shu)15%～20%。由于(yu)其(qi)翼緣內(nei)外側平行(xing)，緣端(duan)呈直角，便于(yu)拼裝(zhuang)組合成(cheng)各種構件，從(cong)而可(ke)節約焊接(jie)、鉚接(jie)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作量25%左右，能(neng)大(da)大(da)加快工(gong)(gong)(gong)(gong)(gong)(gong)(gong)程的(de)(de)(de)建設(she)速度(du)，縮短工(gong)(gong)(gong)(gong)(gong)(gong)(gong)期。

用途：

由(you)于具有上述優(you)點(dian)，H型鋼應用(yong)(yong)廣泛(fan)，主要用(yong)(yong)于：各(ge)種民用(yong)(yong)和工業(ye)(ye)建筑結構;各(ge)種大跨度的工業(ye)(ye)廠房和現代化高(gao)(gao)層建筑，尤其是(shi)地(di)(di)震活(huo)動頻(pin)繁地(di)(di)區和高(gao)(gao)溫工作條件下的工業(ye)(ye)廠房;要求承載能力大、截面穩定性好、跨度大的大型橋(qiao)梁;重型設(she)備;高(gao)(gao)速公路;艦(jian)船(chuan)骨架;礦山(shan)支(zhi)護;地(di)(di)基處理和堤壩工程;各(ge)種機器構件。

分類：

H型鋼的產(chan)品規格很多，分類方法有(you)以下(xia)幾種。

(1)按產品的翼(yi)(yi)(yi)緣(yuan)(yuan)寬(kuan)(kuan)(kuan)度(du)(du)(du)分(fen)為寬(kuan)(kuan)(kuan)翼(yi)(yi)(yi)緣(yuan)(yuan)、中(zhong)翼(yi)(yi)(yi)緣(yuan)(yuan)和窄翼(yi)(yi)(yi)緣(yuan)(yuan)H型(xing)鋼(gang)。寬(kuan)(kuan)(kuan)翼(yi)(yi)(yi)緣(yuan)(yuan)和中(zhong)翼(yi)(yi)(yi)緣(yuan)(yuan)H型(xing)鋼(gang)的翼(yi)(yi)(yi)緣(yuan)(yuan)寬(kuan)(kuan)(kuan)度(du)(du)(du)B大于或等(deng)于腹(fu)板高度(du)(du)(du)H。窄翼(yi)(yi)(yi)緣(yuan)(yuan)H型(xing)鋼(gang)的翼(yi)(yi)(yi)緣(yuan)(yuan)寬(kuan)(kuan)(kuan)度(du)(du)(du)B約等(deng)于腹(fu)板高度(du)(du)(du)H的二分(fen)之一。

(2)按產(chan)品用途分(fen)為(wei)H型(xing)鋼(gang)(gang)梁、H型(xing)鋼(gang)(gang)柱、H型(xing)鋼(gang)(gang)樁、極厚翼緣(yuan)H型(xing)鋼(gang)(gang)梁。有時也(ye)將平行腿槽鋼(gang)(gang)和(he)平行翼緣(yuan)丁字鋼(gang)(gang)也(ye)列入H型(xing)鋼(gang)(gang)的范圍(wei)。一般以窄翼緣(yuan)H型(xing)鋼(gang)(gang)作為(wei)梁材(cai)，以寬翼緣(yuan)H型(xing)鋼(gang)(gang)作為(wei)柱材(cai)，據此又有梁型(xing)H型(xing)鋼(gang)(gang)和(he)柱型(xing)H型(xing)鋼(gang)(gang)之稱。

(3)按生產方式分為焊接H型鋼和軋制H型鋼。

(4)按尺寸規格大小(xiao)(xiao)分(fen)為大、中、小(xiao)(xiao)號(hao)(hao)(hao)H型鋼。通常(chang)將(jiang)腹(fu)板高度(du)H在700mm以(yi)上(shang)的(de)產品稱為大號(hao)(hao)(hao)、300～700mm的(de)稱為中號(hao)(hao)(hao)，小(xiao)(xiao)于300mm的(de)稱為小(xiao)(xiao)號(hao)(hao)(hao)。