In the old days they used to use hot lead, nowadays you can cork it with Prattley putty (putty cement).
No PVC is acceptable, you can join the new PVC piping into the existing Cast Iron.
Pvc pipes are cheaper. They are easier to join. They last longer.
Iron, cast iron is just iron
Cast iron is fabricated in blast furnaces where iron ore is reduced by coke to cast iron, according to Wikipedia.
no cast iron is more superior than foregn iron
Grey cast ironWhite cast ironMalleable cast ironDuctile cast iron
When Pig Iron is melted and recooled it is called Cast Iron
During the manufacture of Cast Iron, an intermediate product is Pig Iron. Further processing results in Cast Iron.
Almost everything that is called 'cast' such as; cast iron pots, cast iron centrplate (some boats use them). Until relatively recently, all engine blocks were cast iron. Most diesel engines are still cast iron.
how do i cut cast iron
Foundries make cast iron.
Cast iron mainly includes grey cast iron, ductile cast iron and malleable cast iron. As for ductile iron, it has very wide application, such as Pressure pipes and fittings, Automotive applications, Agriculture, road and construction applications, General engineering applications. As for the specific application of ductile iron, grey iron and malleable cast iron, please refer to the links below.