... 350g/m Detailed Product Description1) Hot dip galvanized steel pip3) Outer diameter:20-323mm;Thickness:1.5- ... 16mm,Length:1-12mm4) Steel grade:Q195/235/345,SS400,SS500,ST37,ST52 ... report Hot dip galvanized scaffolding pipes/steel scaffolding tubes/scaffolding steel tubesO.DO.D toleranceW.TThickness Tolerance21. ... )Delivery period :15 to 30 Days High Quality Galvanized steel pipe/tube