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48.什么叫 H 型钢轧机?H 型钢,腿宽而腰薄,腿部内外侧平行或近于平行,腿端呈直角,又称平行宽边工字钢。H 型钢断面设计合理,规格多,外形美观,施工方便,广泛应用于建筑结构中。以 H 型钢取代普通型钢,在建筑上可减轻金属结构30～40％,在桥梁上可减轻15～20％,在其他结构上可减轻10～25％。如用H 型钢代替钢板和普通型钢作铆焊结构时,可减轻金属构件重量达20～40％,且制造省工,质量也优越很多。
48. What is H-beam mill? H-beam, wide leg and thin waist, leg parallel to the inside or outside the parallel, leg-shaped right angle, also known as parallel broadside beam. H section section design is reasonable, specifications, beautiful appearance, convenient construction, widely used in building structures. H-beam to replace the general-type steel, the building can reduce the metal structure of 30 to 40%, in the bridge can be reduced by 15 to 20% in other structures can be reduced by 10 to 25%. If H-beam instead of ordinary steel plate and for the welding structure, can reduce the weight of metal components up to 20 ~ 40%, and manufacturing labor, the quality is also superior.