Frame scaffolding, Material:Q345 Surface treatment:HDG Color:Silvery High quality,competitive price ,timely delivery Narrow Frames1.69" outside steel tube diameter, 1-1/2" inside steel tubing diameter, 0.095" wall thickness;Other tubing sizes A: 1",B:1-1/2" and C: 1-5/8" available upon request;The width of all frames are measured center to center;Recommended maximum load capacity does not exceed ...