... first 2.OEM welcomed 3.Material:grey cast iron; ductile cast iron 4.0.5-2000kg Pipe fitting cast ironIntroduction:1)Product ... : Elbow, Tee, Socket, Nipples, Bushings, Union, Bends, Cross, etc2)Material:Grey cast iron ... ; ductile cast iron; cast iron3)Type:Plain, beaded / beaded with ribs, ...