Material Specification - Page 5 of 24 3.6 Copper Pipe, 3/4" - 2" 3.6.1 Copper pipe shall be Type "K", soft tempered, seamless, for underground installation, in accordance with ASTM B88 and Federal Specifications pper pipe shall meet or better NSF-61 requirements. 3.7 Polyethylene Service Tubing – NOT ALLOWED FOR PERMANENT PLACEMENT 3.7.1 …Sep 01, 2015 · 1.1 This standard extends the application of steel casting reference radiographs E446, E186, and E280 to ductile iron castings when determined appropriate for specific applications (see Section 4). 1.2 The reference radiograph films are an adjunct to E446, E186, or E280, and must be purchased separately from ASTM International, if needed (see 2.1).During H1 FY2020, we have successfullypleted 12 days planned annual shutdown. Despite of this, we achieved 593,000 tonnes of saleable production during H1 FY2020, up 13% y-o-y on account of improved availability of hot metal (restart of Blast Furnace (BF)-3 in August 2018), better operational efficiency at rolling mills and ductile iron plant.These balls are manufactured from low carbon steel wire, i.e. type 1018 steel. The ball blanks are cold headed, flashed and ground. They are then heated to 1700 F in a very carbon-rich, gaseous environment to develop a high carbon case or shell in a rotary hearth furnace--carbon is literally cooked into the outer surface of the steel balls.