... 3.OD:219-3000mm thickness:6-25mm Steel Spiral Welded Pipe 1. Material:Q235,Q345,10#,20#, ... request5. Application: For linepipe in petroleum and natural gas , water and gas, mineral slurry. Also for chemical ... and pile driving, etc. If any questions, pls feel free to contact with us (sale7 at sino-steel ... ), your inquiries will be highly appreciated!Spiral Steel Pipe1.grade:Q235,Q345,10#,20#,16Mn,L245 ...