1.LENGTH: 2-12M 2.SIZE:15*15MM--1000*1000MM 3.THICKNESS:0.5-16MM 4.Q195, Q235, Q345, ECT 5.SURFACE:HOT-DIP GALVANIZED COMPANY PROFILE Belonging to TianJin yuantai derun group,Tianjin yuantai industrial&Trade are a leading producer of pre-galvanized square tubes and hotdipped galvanized steel pipe and galvanized tubes in China and we have 71 hot dipped square tube production lines with square tube ...