中文英文简写镀锌galvanize螺栓BoltM螺母NutNUT螺纹screw thread 尼龙防松动螺丝Nylon Lock NutNYLOC NUT角钢Equal AnglesEAUnequal AnglesUA槽钢Parallel Flange ChannelsPFC不等边槽钢Tapered Flange ChannelsTFC圆钢rodROD D钢板platePLT钢条flat barFLT圆管circle hollow sectionCHS销子latch方管rectangle hollow sectionRHSSHSH型钢universal columnsUCuniversal beamsUBwelded h beamWBwelded h ColumnWC无头栓钉studstud螺栓setscrewsetscre垫片washerwasher衬套bushbush管pipepipe弯头elbow热镀锌hot dipped galvanizedH.D.G