Q355B工字鋼的翼緣都是等厚度的，有軋制截面，也有由3塊板焊接組成的組合截面。普通工字鋼都是軋制截面，由于生產工藝差，翼緣內邊有1：10坡度。H型鋼的軋制不同于普通工字鋼僅用一套水平軋輥，由于其翼緣較寬且無斜度(或斜度很小)，故須增設一組立式軋輥同時進行輥軋，因此，其軋制工藝和設備都比普通軋機復雜。國內可生產的 軋制H型鋼高度為800mm，超過了只能是焊接組合截面。
窄翼緣h型鋼適用于梁或壓彎構件，而寬翼緣h型鋼和h型鋼樁則適用于軸心受壓構件或壓彎構件。普通工字鋼、輕型工字鋼與HW、HN型鋼相比，等重量前提下，w、 ix、 iy都不如H型鋼
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普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)和(he)(he)輕(qing)型(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)的(de)(de)(de)(de)翼(yi)緣由根部向邊上逐漸變薄的(de)(de)(de)(de)，有(you)一定的(de)(de)(de)(de)角度，普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)和(he)(he)輕(qing)型(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)的(de)(de)(de)(de)型(xing)(xing)號(hao)(hao)是用其腰(yao)(yao)(yao)高厘米(mi)(mi)數(shu)(shu)的(de)(de)(de)(de)阿拉伯數(shu)(shu)字(zi)(zi)(zi)(zi)(zi)來表(biao)(biao)示(shi)(shi)，腹板(ban)、翼(yi)緣厚(hou)(hou)度和(he)(he)翼(yi)緣寬度不同(tong)其規(gui)格(ge)以腰(yao)(yao)(yao)高( h)×腿(tui)寬(b)×腰(yao)(yao)(yao)厚(hou)(hou)(d)的(de)(de)(de)(de)毫數(shu)(shu)表(biao)(biao)示(shi)(shi)，如(ru)“普工(gong)(gong)(gong)(gong)(gong)(gong)160×88×6”，即表(biao)(biao)示(shi)(shi)腰(yao)(yao)(yao)高為(wei)(wei)160毫米(mi)(mi)，腿(tui)寬為(wei)(wei)88毫米(mi)(mi)，腰(yao)(yao)(yao)厚(hou)(hou)為(wei)(wei)6毫米(mi)(mi)的(de)(de)(de)(de)普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)。/“輕(qing)工(gong)(gong)(gong)(gong)(gong)(gong)160×81×5”，即表(biao)(biao)示(shi)(shi)腰(yao)(yao)(yao)高為(wei)(wei)160毫米(mi)(mi)，腿(tui)寬為(wei)(wei)81毫米(mi)(mi)，腰(yao)(yao)(yao)厚(hou)(hou)為(wei)(wei)5毫米(mi)(mi)的(de)(de)(de)(de)輕(qing)型(xing)(xing)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)。普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)的(de)(de)(de)(de)規(gui)格(ge)也可用型(xing)(xing)號(hao)(hao)表(biao)(biao)示(shi)(shi)，型(xing)(xing)號(hao)(hao)表(biao)(biao)示(shi)(shi)腰(yao)(yao)(yao)高的(de)(de)(de)(de)厘米(mi)(mi)數(shu)(shu)，如(ru)普工(gong)(gong)(gong)(gong)(gong)(gong)16#。腰(yao)(yao)(yao)高相同(tong)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)，如(ru)有(you)幾種不同(tong)的(de)(de)(de)(de)腿(tui)寬和(he)(he)腰(yao)(yao)(yao)厚(hou)(hou)，需在型(xing)(xing)號(hao)(hao)右邊加a b c 予以區別，如(ru)普工(gong)(gong)(gong)(gong)(gong)(gong)32#a、32#b、32#c等。熱(re)軋普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)的(de)(de)(de)(de)規(gui)格(ge)為(wei)(wei)10-63#。經供(gong)需雙方協議供(gong)應(ying)的(de)(de)(de)(de)熱(re)軋普通(tong)工(gong)(gong)(gong)(gong)(gong)(gong)字(zi)(zi)(zi)(zi)(zi)鋼(gang)規(gui)格(ge)為(wei)(wei)12-55#。

普通(tong)工字鋼，輕型工字鋼，由于截面(mian)尺寸均相對(dui)(dui)較高、較窄，故(gu)對(dui)(dui)截面(mian)兩個(ge)主袖的(de)慣性矩(ju)相差較大(da)，因此(ci)，一般僅能直接(jie)用(yong)(yong)(yong)于在其(qi)腹板平面(mian)內(nei)受(shou)彎(wan)的(de)構(gou)(gou)件(jian)或(huo)將其(qi)組(zu)成格構(gou)(gou)式受(shou)力構(gou)(gou)件(jian)。對(dui)(dui)軸心受(shou)壓構(gou)(gou)件(jian)或(huo)在垂直于腹板平面(mian)還有彎(wan)曲的(de)構(gou)(gou)件(jian)均不宜采用(yong)(yong)(yong)，這就使(shi)其(qi)在應用(yong)(yong)(yong)范(fan)圍上有著很大(da)的(de)局限。工字鋼的(de)使(shi)用(yong)(yong)(yong)應依據(ju)設計圖紙的(de)要求進(jin)行選(xuan)用(yong)(yong)(yong)。