Stainless Steel Square Pipes 1.Thickness:0.5-20mm 2.Material:201,304.304L.316,316L 3.Size:15*15-600*600mm Stainless Steel Square Pipes1.Thickness:0.5-20mm2.Material:201,304.304L.316,316L3.Size:15*15-600*600mmwhen you have demands of such goods, please do not hesitate to contact Top Sky Steel Co.,Ltd. Thanks. 304 Steel Square Pipes