Standard/Material: SGCC/DC51D/DX51D/DX52D/SGSS/SGCDI/SGCD2/SGCD3.ctcSpangle: Regular spangle,Minimum spangle, Zero spangle, Big spangleUsage:Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe,etc.