Ductile Iron Grooved Fittings With ASTM A536 standard, Including Coupling, Adaptor, Bend, Reducer, Coupling, Elbow, Tee, Cross, Ductile Iron Grooved Fittings With ASTM A536 ... standard, Including Coupling, Adaptor, Bend, Reducer, Coupling, Elbow, Tee, Cross, Cap, Mechanical Tee, Mechanical Cross cap ...