PRODUCT: Steel Hollow SectionSTEEL GRADE: Q195/Q235/Q345/A500Gr.B/ JIS G3466 STKR400/S355JR /St37/S235JR etcSIZE RANGE: Square:10x10mm to 600x600mm ; Rectangular: 10x20 to 400x600mm ROUDN :DO12.7-720mmTHICKNESS RANGE: 0.5mm to 20mmLENGTH RANGE: Normal-6meters or 12meters ; also accept fixed lengthSURFACE TYPE: Black/Bright/Painted/Galvanized/ Hot Dip Galvanized finishedPACKAGING: Standard exporting packagingAPPLICATION: Steel Structure, Fence ,Road sign, Frame , Decorative tubes etc.Other MS Steel Products: Steel Angle/Steel Sheet/API PIPE Etc