以压型钢板或压型铝板作屋面、墙面的围护结构,以轻型焊接H型钢作承重骨架,冷弯型钢作檩条和墙梁,采用高强螺栓、普通螺栓和自攻螺丝等作为连接件所组成的轻型钢结构是一种新型的建筑体系。这种体系建筑物的重量轻,施工速度快,综合技术经济效果好。因此许多国家都有专门生产这种房屋的建筑企业,即钢结构房屋工厂或轻型房屋工厂。这些工厂就是成套地生产厂房和房屋(包括承重结构、围护结构、门窗及各种零配件、连接件、密封材料及隔热保温材料等) 和成套地出售房屋,形成比混凝土制品厂更加全面、更加完善的建筑生产企业。在美国、日本、英国、瑞典、苏联、意大利、澳大利亚等国都有这种工厂。从小型的商 Pressed steel plate or pressed aluminum plate is used as roof and wall cladding structure, light welded H-shaped steel is used as load-bearing frame, cold-formed steel is used as purlin and wall beam, high-strength bolts, ordinary bolts and self-tapping screws are used as connecting parts. The composition of the light steel structure is a new type of building system. This kind of system building is light in weight, fast in construction, and has a good overall technical and economic effect. Therefore, many countries have construction companies that specialize in the production of such houses, namely steel-framed or light-housed factories. These factories are complete sets of production plants and houses (including load-bearing structures, enclosures, doors and windows and various spare parts, connectors, sealing materials, and thermal insulation materials, etc.) and sets of houses for sale, forming a more comprehensive than concrete products factory. More complete construction companies. In the United States, Japan, Britain, Sweden, the Soviet Union, Italy, Australia and other countries have such factories. From small businesses