square tube Thickness:0.5-20mm Size(dia.): 15*15--400* ... ,10*20-300*500mm material:Q195 Q235 4)Certifactions : BV square tubeAdditions:1)Thickness:0.5-20mm2)Size(dia.): 15*15 ... strcuture,Shipbuilding,Bridging,Automobile chassisMain marketMiddle East,Africa, Asia and some Uropean country and America ,AustraliaCountry of originChinaProductivity3000 Metric Tons pet MonthRemarkPayment ...