... TheoryThickness1.0~32mmLengthAny Length Below 16 MeterStandardAPI 5LMaterialGrade B,X42,X46,X52,X56,X60,X65,X70,etcUsagePSL- ... PlantEndsPlain, Beveled, Or Weld With FlangesPlastic Caps And Steel Rings Can Be Provided If PossibleSurfaceBared, Galvanized, Oiled, ... Trading,OthersN/A1.Some pictures about Galvanized square steel tube for your reference2.Shipping3.Packing4.Company certification5.SGS ...