Our square tubes and pipes are marketed widely all over the country and exported to North-American, Europen Countries.Middle East and Southeast Asia,etc and get the good reputation based on good quality. Mild steel pipes are mainly used for boilers, petro-chemicals, mechanics, ship building, vehicles, radiators. Standard including:Q235.Q345.10# .20# .40#. 20G.45#.16Mn and so on .Seamless pipes specifications covers from 10*10----630*630 . Thickness from 1---50.