... -400mm 2.width:864-4020mm 3.material:Q345 C/D/E,Q390,Q420,Q500,S355 JO/J2/J2G3/K2/N, A572 ... .width:864-4020mm3.length:2000-23000mm4.material:Q345 C/D/E,Q390,Q420,Q500,S355 JO/J2/J2G3/K2/N, A572 ... and cross-arm togetherHJ431welding fluxhot dip galvanization and installationzincwhole quality monitor in the processprocess flow1 contact2 design3 select material with care4 ...