Material:Q235B Finished:black iron,hot dipped galvanized size:41*41*2.0,41*52*2.0,41*62*2.0,41*72*2.0,41*82*2.0 punching hole Main ProductsGround support system, roof support systemMain Exporting CountrySouth America,Eastern Europe,Africa,Oceania,Mid East,Western EuropeQuality StandardGB,AISI,ASTM,BS,DIN,JISPackagingPVC is free,we also can pack as you requestsize:41*41*2.0,41*52*2.0,41*62*2.0,41* ...