... ) quality:Q195, Q235,Q345 Black pipe processing cycle: Hot Dipped Galvanized Pipe Proceed FlowBlack Pipe Examination→Acid Washing→Water Washing→Solvent ... pipes/tubes are avalible here2.Length:5.8m,6m-11.8m,12m,or any llength as customer required3.Application: ... machines,petro-chemical ,ship,structure pipe,automobile,shock absorber,building,geology,fluid tubes,line pipe etc4.High quality:ISO9001 API5L ...