Steel pipes are normally manufactured by ______________ process?

A. Karbate
B. Lead or glass
C. Fireclay bricks
D. PVC

A. Carburising
B. Nitriding
C. Cyaniding
D. Annealing

A. Chemical
B. Electrochemical
C. Both A. & B.
D. Neither A. nor B.

A. 0.1 to 0.15
B. 0.35 to 0.45
C. 0.65 to 0.80
D. 0.85 to 1.2

A. Precipitation
B. Fusion
C. Sintering
D. Agglomeration