Type: Welded
Grade: Q195,Q235,Q345,Ss400,A36,A53,10#,20#,35#,45#,20g
Technique: Hot Rolled
Surface Treatment: Hot DIP Galvanized
Section Shape: Round
Shape: Round, oval, ArchedSource: https://www.hxpipeline.com/galvanized-corrugated-steel-metal-culvert-pipe.html