Ⅰ-steel; double tee iron; double t-steel; flange beam; h-bar; i-bar◇工字钢轨 bull head rail; 工字钢梁 steel i-beam工字梁,工字钢: i i beam低碳工字钢: mild steel i-beam工字钢,梁钢。: joist steel工字钢底砖: clip tile工字钢顶梁: h beam cap下载手机词典可随时随地查词查翻译