Boiler Part (Size of tubes of 210 MW Boiler)

Tubes of various material and size are used in a boiler according to temperature and flue gas velocity at various heating zone.

Diameter and thickness of tubes at various zone in a old 210 MW boiler.
(Sizes can be different for  different manufacture and technology.)

Zone	No. of coil	No. of tube in a coil	Diameter	Thickness	Make of Construction
Water Wall	-	Front -181 Rear -181 Left - 127 Right - 127	63.5 mm	5.6 mm	SA210 GRADE A1
Platen Water Wall	4	42	63.5	5.6	SA210 GRADE A1
Platen Super Heater	29	26	51	10/8.8/7.1/5.6/4.5
Reheater Front	89	16	54	4.5/3.6
Reheater Rear	59	12	47.63	3.6
Arch Tube	-		76.1	7.1
Final Super Heater	119	8	47.63	8.8/7.1/5.6
Ext. Water wall			63.5	5.6
Steam cooled wall			51
LTSH Tube	134	21 (Upper) + 21 (Lower)	44.5	4.5	UPPER-  T-11 Lower- Carbon steel
Economizer Tube (Finned Type)			44.5	4.5
Radiant roof			54
Rear roof			51
LTSH Connecting tube	-	134	51	5
Spacer tube	-	1	44.5	4.5
Riser tube			127	12