Process Equipment and Plant Design
Pick out the wrong statement pertaining to shell and tube heat exchanger.

Baffles are supported independently of the tubes by tie rods and positioned by spacers
Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle
Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter
Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

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Process Equipment and Plant Design
Seamless pipe is made

Both B and C
By extrusion & casting into static and centrifugal molds
From rolled strips formed into cylinders and seam-welded
By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing

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