... . material is grey iron and ductile iron SpecificationsGrey iron casting connection part;1. it's pipe fitting castings 2. material is grey ... material test certificates are available upon request ItemDescriptionProcessing TechnicDie casting Part materialADC12, A380, AlSi12, A356, ZL102, YL104, YL112, YL113,or ... higher strength and stiffness, economic and durable. Grey iron casting connection part