... 50mm,60*60mm,80*80mm,1000*1000mm 3)Raw Material:Q195,Q235Square steel tube Size:15*15mm-400*400mm ... /m2End treatmentplain,beveled, /threaded with sockets/coupling and plastic caps/flangeSurface treatmenthot dipped galvanized, oiled or black painted ... -45 days after deposit Other productsWelded steel pipe,square/rectangular hollow section,seamless steel pipe, steel strip, steel coil, square bar,flat bar, ...