0 m ,whose main chord pipes of trusss articulations is processed with new heat- treating technology,this paper introduces the equipments, theory,traitof technology and operating essential of main chord pipe heat- treatmentof trussofsteal tubulararch.
0 m上承式钢管砼桁架无铰拱桥 ,钢管拱桁架节段采用煨弯新技术于工厂内加工制作而成。