1.Name: cast iron fittings ( grey iron fitting) 2.Certificate: UPC 3.Standard: ASTM A888 4..Material: cast iron, gray 1.Name: cast iron fittings ( grey iron fitting)2.Certificate: UPC3.Standard: ASTM A8884.Material: cast iron, gray iron5.Type: bend, tee, comb, wye,tap tee ...etc6.Size range: 1.5" to 15"