... 4, 6, 7, 8, 9, 10, 11 And some other international standard and grade.3. SIZE: 1/2”-24”4. Length ... Ends: Plain, Beveled, Or Weld with Flanges Plastic Caps and Steel Rings Can Be Provided If Possible8. Inspection: With Chemical Composition ... and Mechanical Properties Analysis; Hydrostatic Test, Dimensional and Visual Inspection, ...