... 9m 12m or as requiredMaterialQ195~235,SS400StandardGB, ASTM,BS,JIS,DIN,EN,AISISteel raw materialGB standard, ASTM standard and Europe standard ... section, non-standard section based on building design.ProcessSplit raw material, compose, automatic welding, SA 2.5 sand blast, finish ... .Material split to be smooth, flat and correct.Welding thickness meets ...