Hot Dip Galvanized Steel Pipe 1) W.T.:1.2-16mm 2) O.D.: 21. ... /400/500,S235JR/S235JQ/S235J2,STK290,STK400,STK490,STK500,STK540InspectionWith Hydraulic Testing, Eddy Current , Infrared TestTechnique:Welded:Cold drawn,Hot rolled ... quantity of order:20MT4)Delivery period :15 to 30 Days High Quality Galvanized steel pipe/tube