steel tubing: Standard:ASTM,DIN, JIS, Material quality:Q195 ... D.:16-700mm Wall thickness: 0.6-60 steel tubing:Standard:ASTM,DIN,JIS,Material quality:Q195,Q235,Q345 ... requiredWe are one of the most famous steel supplier in China,our main products include:carbon ... plates/coils/pipes etc,H-beam,I-beam,round bar,square bar,rebar(deformed bar),wire mesh ... is sales-11 at huairon dot comThanks! steel tubing