... : Ductile Iron conforming to ASTM A536, Grade 65--45--12 1) UL / FM appvoal UL/FM 2) Standard grooved ... , ASTM, DIN, JIS, GB, BS, etc.TypeManufacturerSize1/2"-12"MaterialDuctile ironFinishPaint, Epoxy or Galvanization ApprovalFM/ULUsage1) Automatic sprinkler system ... station, railway station, airport, seaport, bridge, etc.PaymentL/C or T/TDelivery Timewithin 30 days or as per customers ...