北京红冶钢厂小型轧钢车间,原为横列式轧机φ300×2/φ250×4/φ300×1(见图1)。主要产品为4～14×25～60mm扁钢及3～5号等边角钢。钢种以普碳为主,其次碳工、碳结、合结、合工等,优质比占2/5左右。目前该车间生产的品种仍属短线产品,供不应求。 Beijing Hongye Steel Mill small rolling workshop, the original horizontal rolling mill φ300 × 2 / φ250 × 4 / φ300 × 1 (see Figure 1). The main products are 4 ~ 14 × 25 ~ 60mm flat steel and 3 ~ 5 equal angle steel. Carbon steel to Cape-based, followed by carbon, carbon knot, combined knot, and so on, high-quality ratio of about 2/5. At present, the production of the plant is still short-term varieties of products, in short supply.