[提要]  简要介绍了HRB400(Ⅲ)级钢筋的生产情况、性能特点、经济效益及工程应用情况。通过冶金和建筑两个行业的共『司努力，这种钢筋有望成为未来混凝土结构的主导受力钢筋。本文可供建筑设计部rJ及冶金企业参考。
[关键词]  HRB400(Ⅲ)级钢筋  性能  效益  工程应用

The manufacturc, pcrformancc, cconomic bcncfit and cnginccring applications of bars with yicld strcngth of 400 MPa ( HRB400) arc introduccd.  With the grcat cfforts made by the tradcs of mctallurgical and building industry,it will be the dominant rcinforccmcnt in the future concrcte structures. This papcr can be submittcd to dcpartmcnt of building dcsrgn and mctallurgy cntcrprise for rcfcrcncc.
Keywords:  HRB400 bar; pcrforrnancc; bcncfit; application