20Mn热轧圆钢
20Mn hot rolled bar steel
25MnV钢圆环链
MnV steel round link chain
45热轧圆钢
45 hot-rolled round steel
CFRP-圆钢管－混凝土
concrete-filled CFRP-steel composite tubular struc
K型圆钢管搭接节点
overlapped tubular K-joints
overlapped joint of K-type circular steel tube
Unstiffened
overlapped CHS K-joints
并联K形圆钢管相贯节点
circular tubular parallel K-joints