... .6-16mm 3)Length:Max16meters 4)with threading and coupling high frequency galvanized steel pipe: TypeGalvanized steel pipe/ hot dipped galvanized steel ... , JISMaterialQ195 , Q215 ,Q235 , Q345ApplicationPetroleum, power,gas metallurgy, papermaking, chemical, medical equipment, aviation, boiler heat, exchanger, shipbuilding, construction, etc.PackageStandard exporting packageDelivery ...