Material A105/A182F51/A182F1+SS304L(Overlay) / A182F53 / A266 Gr.2 / F304, F304L F316,F316L / Others Size (min) 1/2 inches and customer's designed size Size (Max) 60inches and customer's designed size Class(Min) 150# and customer's designed found Class(Max) 2500# and customer's designed found