Number:SLADE-SSST Specifications:2-19mm Classification:Steel section Introduce:Thickness: 2-19mm Length: 4-16m Grade: EN, ASTM, JIS etc product description Specifications of Cold Formed Hollow Section - Square Tube, Rectangular Tube and Circular Tube: 1. We can produce circular tube, square tube and rectangular tube etc 2. Standard and Grade: ASTM A500 Gr.A,B,C A53 Gr.A,B etc 3.Specifications for RHS- Rectangular Hollow Section: