Detailed Product Description fittingsDuctile cast iron pipe fitting1) EN545/ISO2531/EN598/BS4772/GB/T13295-20032) Types: T-joint, cross, through wall, socket, elbow, reducing flank3) Size: DN50-1600mm(2"-100")4) External coated with rich zinc and bituminous paint5) Internal coated with cement mortal lining6) Processing technique: sand blast and lost foam, investment casting