ASME A112.63 pdf download Floor and Trench Drains 2.1.1 Castings. Castings shall be sound, free ofblowholes, cold shuts, fins, and other imperfections, andshall be of uniform thickness and true to pattern. 2.1.2 Cast lron. Cast iron shall comply with Class 25specified in ASTM A48. 2.1.3 Ductile lron. Ductile iron shall comply withor exceed the requirements of Grade 60-40-18, 60-42-10,60-45-12,or 80-55-06...