... of DI grooved fitting1) Standard grooved specifications: according to VICTAULIC2) Material: Ductile Iron conforming to ASTM A536,3) Thread : BSPT & BSP & NPT4) ... with pallet and wooden box8) Ductile Iron Grooved Fittings With ASTM A536 standard,Including Coupling, Adaptor, Bend, Reducer,Coupling, Elbow, ... are interested in our products please contact us .Welcome to our factory for inspection visits