... )Certificates:ISO 9001;2008 5)Length:2-12m ERW Steel Pipe O.D19.5—630 mmW.T0.6-35 mmO.D ... , etc.Surface TreatmentsBlack Vanished, PP,PE,3PE,Galvanized etc.UsageConstruction, water heating, car manufacturing, electrical installation and mining etc.Main marketEurope ...