stly, please note that the ASTM is a standards for the production of the materials and test methods of various products. For a given dimension will be the responsibility of the ASME. and then in your item 113 there is no the ASTM numbers to identify, therefore we shall offer the material is the Octagonal soft iron, BHN 90 max as per detail in item 113 and followed with the standards ASME B16.20 and API 6A that is the ring number R24. for the CL5000 is meaning of the flanges class CL5000