... 600, 1.2-30mm Galvanized Square Hollow Pipe / Black Square Hollow PipesSquare Steel Pipe / Square Hollow PipeSizeW.T20*20----600 ... :Middle east, Africa, North and South America, East and West Europe, South and southeast Asia, AustraliaPlace of OriginChinaHS ... Ton/MonthProcessing technology available:Threading , coupling and with plastic caps protected, Galvanized on surface, or black pipesRemarks 1 ...