50-400 Square Steel Tube

  
Features:
1) Specification: from 50 x 50 to 400 x 400
2) Thickness: 2 - 12mm
3) Loneness: 6-16m
4) Trademark: Q235, Q345, Q195
5) Form of welding line: straight sew
6) Production techniques: resistance welding
7) Port of tube: without screw thread Our company has 125, 250, and 400 three square and rectangular production
lines, and the yield is 0.3million tons annual year. Our steel tubes are mainly
used in environmental protection equipment industry, light machine industry
and large-scale architecture filed, such as bridge, gymnasium center an