High quality carbon steel structural pipe

　　Structural tube, this standard applies to general structure, mechanical structure with seamless steel tubes, fluid seamless steel pipe seamless steel pipe standard for general conveying fluid. Including the use for general structural and mechanical structure, used extensively for a variety of structural tube construction, machinery, transportation, aviation, oil exploration and other industries.

　　Standard: GB/T8162,ISO2937，ASTM A53，ASTM A106，JIS G 3441，BS EN 10210-1

　　Material: 10# 20# Q345 ASTM A106/A53

　　Outside diameter:60-630mm

　　thickness 1.5-40mm

　　Usage: For common structure