Seamless pipe is made________________?
Correct answer: C. Both B. and C.
- A. From rolled strips formed into cylinders and seam-welded
- B. By extrusion & casting into static and centrifugal molds
- C. Both B. and C.
- D. point and further reducing it by rolling gas drawing
- E. By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer
Explanation
Seamless pipe can be produced by extrusion or centrifugal casting, and also by piercing a rotating solid billet followed by rolling or drawing. Since both listed methods are recognised, the combined option is correct.
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