波形梁钢护栏
corrugated beam steeled protection fence
12Mn2VB非调质钢
Non-Quenching-Tempering Steel 12Mn2VB
22Mn2SiVBS空冷贝氏体非调质钢
air-cooling microalloyed engineering bainitic steel 22Mn2SiVBS
35MnVN、40MnVTi非调质钢
35MnVN
40MnVTi microalloyed engineering steel
40Cr调质钢
quenched and tempered 40Cr steel
40Cr quenched and tempered steel
HN2154非调质钢
HN2154 microalloyed steel
HN2154 non-quenched and tempered steel
H型钢钢混叠合梁
H-formed steel concrete composite girder
Q690E调质钢
Q690E quenched and tempered steel
WQ960D调质钢
Quenched and tempered steel WQ960D
奥氏体钢护环
austenitic steel retaining ring