Hot Dip Galvanized Ring Lock Scaffolding: Material: Q195, Q215, Q235, S235, Q345... Tube: ... 500, 1000, 1500, 2000, 2500, 3000, And 4000mm.ItemRing lock ScaffoldingMaterialQ235, Q345 material is as per customer’s demand with ... and yield stress.Surface treatmentHot Dip Galvanized, Painted, Powder coatedTypeRing lock systemSizeOEM service500, 1000, 1500, 2000, 2500, 3000,4000mmCertificationISO9001-2000 ...