Hot extrusion process is not used for making____________________?
Correct answer: C. Cast iron pipe for domestic water supply
- A. Stainless steel tubes used in furnitures
- B. Aluminium curtain rods
- C. Cast iron pipe for domestic water supply
- D. Any of these
Explanation
Cast iron has poor ductility and is difficult to force through an extrusion die, so cast iron domestic water pipes are generally made by casting. Aluminium rods and stainless-steel tubes are suitable hot-extrusion products.
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