U Steel Arche clamps for Mining 1.We are manufacturer 2.It is made ... U29 U36 steel 3.ISO, SGS Certification U Steel Arche clamps for Mining U type steel support main purpose: for mine ... support .U25,U29,U36 type steel frame.U Steel Arche clamps for Mining:1.Spec.: 25U, 29U, 36U 2.Standard:GB ... steel arch clamp for 25U,29U,36U steel 2, spreader bar : to connect one steel arches to another one The below ...