Pre-Galvanized Steel Tubes for greenhouse building Standard:API, ASTM, BS, DIN, GB, JIS, EN Grade:Q195 Q215 Q235 Q345 , 10# 20# 45# , ST35 ST42 ST52 Wall Thickness:0.7-12.0 mm Outer Diameter:15 â?? 300 mm Length:Customersâ?? request Technique:Cold Rolled Secondary Or Not:Non-secondary Alloy Or Not:Non-alloy Surface:Galvanized Application:Structure pipe, Machine, Construction Special Pipe:EMT Pipe Section Shape:Square
