... a lot of recognition from many customers since our good quality and service. 2. Production standard: ASTM A53, BS1387, EN10255, ... rectangular, oval and other special section type4. Detailed Product DescriptionERW steel pipeGRADE:Q195,Q215,Q235,Q275,Q345 OD:21.3mm-219mm ... WT:0.8mm-8.5mm Length:12m PRODUCTHOT DIP GALVANIZED STEEL PIPE/GI LINE PIPETECHNIQUEWELDED/ERWMATERIALQ195,Q215,Q235,Q275, Q345 ...