... Material quality:Q195,Q215,Q235,Q345 Prime quality GALVANIZED PIPEO.DO.D toleranceW.TThickness Tolerance20--219MM±0 ... & EnergyTechnique:Welded, cold drawn, hot rolled, cold rolledPackinghexagonal water proof packing, packed by steel bands each bundle, with PVC ... is a professional and reputed manufacture, for carbon steel welded pipes and galvanized steel pipesContact Info.Michelle LeeTel : +86-022- ...